Summary
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- GPIO subsystem;
- GPU drivers;
- InfiniBand drivers;
- IRQ chip drivers;
- Network drivers;
- Mellanox network drivers;
- i.MX PM domains;
- SCSI subsystem;
- USB Serial drivers;
- AFS file system;
- GFS2 file system;
- File systems infrastructure;
- File system notification infrastructure;
- Overlay file system;
- Proc file system;
- SMB network file system;
- Timer subsystem;
- Kernel CPU control infrastructure;
- Memory management;
- Networking core;
- DCCP (Datagram Congestion Control Protocol);
- IPv6 networking;
- IEEE 802.15.4 subsystem;
- Open vSwitch;
- Network traffic control;
- VMware vSockets driver;
(CVE-2025-21675, CVE-2025-21697, CVE-2025-21668, CVE-2024-57951,
CVE-2025-21680, CVE-2024-50157, CVE-2025-21699, CVE-2025-21669,
CVE-2025-21678, CVE-2025-21665, CVE-2024-57924, CVE-2024-57949,
CVE-2024-53124, CVE-2025-21684, CVE-2025-21676, CVE-2025-21672,
CVE-2025-21682, CVE-2025-21670, CVE-2025-21690, CVE-2025-21673,
CVE-2025-21691, CVE-2024-57952, CVE-2025-21674, CVE-2025-21689,
CVE-2025-21943, CVE-2025-21692, CVE-2025-21667, CVE-2025-21666,
CVE-2024-57948, CVE-2025-21694, CVE-2025-21683, CVE-2025-21681)
Fixed packages 1
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 24.04 LTS 24.04:LTS | linux-azure-nvidia | 6.8.0-1018.19 |
Vulnerabilities 32
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Critical 9.8
smb: client: fix double free of TCP_Server_Info::hostname
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix double free of TCP_Server_Info::hostname When shutting down the server in cifs_put_tcp_session(), cifsd thread might be reconnecting to multiple DFS targets before it realize…
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High 7.8
hrtimers: Handle CPU state correctly on hotplug
In the Linux kernel, the following vulnerability has been resolved: hrtimers: Handle CPU state correctly on hotplug Consider a scenario where a CPU transitions from CPUHP_ONLINE to halfway through a CPU hotunplug down to CPUHP_HRTIMERS_PREPARE, and then back …
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High 7.8
vsock/virtio: discard packets if the transport changes
In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: discard packets if the transport changes If the socket has been de-assigned or assigned to another transport, we must discard any packets received because they are not expected …
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High 7.8
gtp: Destroy device along with udp socket's netns dismantle.
In the Linux kernel, the following vulnerability has been resolved: gtp: Destroy device along with udp socket's netns dismantle. gtp_newlink() links the device to a list in dev_net(dev) instead of src_net, where a udp tunnel socket is created. Even when src_n…
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High 7.8
pktgen: Avoid out-of-bounds access in get_imix_entries
In the Linux kernel, the following vulnerability has been resolved: pktgen: Avoid out-of-bounds access in get_imix_entries Passing a sufficient amount of imix entries leads to invalid access to the pkt_dev->imix_entries array because of the incorrect boundary…
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High 7.8CVE-2025-21692 Public exploit
net: sched: fix ets qdisc OOB Indexing
In the Linux kernel, the following vulnerability has been resolved: net: sched: fix ets qdisc OOB Indexing Haowei Yan <g1042620637@gmail.com> found that ets_class_from_arg() can index an Out-Of-Bound class in ets_class_from_arg() when passed clid of 0. The ov…
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High 7.8
drm/v3d: Ensure job pointer is set to NULL after job completion
In the Linux kernel, the following vulnerability has been resolved: drm/v3d: Ensure job pointer is set to NULL after job completion After a job completes, the corresponding pointer in the device must be set to NULL. Failing to do so triggers a warning when un…
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High 7.8
gfs2: Truncate address space when flipping GFS2_DIF_JDATA flag
In the Linux kernel, the following vulnerability has been resolved: gfs2: Truncate address space when flipping GFS2_DIF_JDATA flag Truncate an inode's address space when flipping the GFS2_DIF_JDATA flag: depending on that flag, the pages in the address space …
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High 7.5
net: fix data-races around sk->sk_forward_alloc
In the Linux kernel, the following vulnerability has been resolved: net: fix data-races around sk->sk_forward_alloc Syzkaller reported this warning: ------------[ cut here ]------------ WARNING: CPU: 0 PID: 16 at net/ipv4/af_inet.c:156 inet_sock_destruct+0x1c…
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High 7.5
net: fec: handle page_pool_dev_alloc_pages error
In the Linux kernel, the following vulnerability has been resolved: net: fec: handle page_pool_dev_alloc_pages error The fec_enet_update_cbd function calls page_pool_dev_alloc_pages but did not handle the case when it returned NULL. There was a WARN_ON(!new_p…
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High 7.3
eth: bnxt: always recalculate features after XDP clearing, fix null-deref
In the Linux kernel, the following vulnerability has been resolved: eth: bnxt: always recalculate features after XDP clearing, fix null-deref Recalculate features when XDP is detached. Before: # ip li set dev eth0 xdp obj xdp_dummy.bpf.o sec xdp # ip li set d…
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High 7.1
Revert "libfs: fix infinite directory reads for offset dir"
In the Linux kernel, the following vulnerability has been resolved: Revert "libfs: fix infinite directory reads for offset dir" The current directory offset allocator (based on mtree_alloc_cyclic) stores the next offset value to return in octx->next_offset. T…
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Medium 5.5
irqchip/gic-v3-its: Don't enable interrupts in its_irq_set_vcpu_affinity()
In the Linux kernel, the following vulnerability has been resolved: irqchip/gic-v3-its: Don't enable interrupts in its_irq_set_vcpu_affinity() The following call-chain leads to enabling interrupts in a nested interrupt disabled section: irq_set_vcpu_affinity(…
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Medium 5.5
filemap: avoid truncating 64-bit offset to 32 bits
In the Linux kernel, the following vulnerability has been resolved: filemap: avoid truncating 64-bit offset to 32 bits On 32-bit kernels, folio_seek_hole_data() was inadvertently truncating a 64-bit value to 32 bits, leading to a possible infinite loop when w…
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Medium 5.5
vsock: prevent null-ptr-deref in vsock_*[has_data|has_space]
In the Linux kernel, the following vulnerability has been resolved: vsock: prevent null-ptr-deref in vsock_*[has_data|has_space] Recent reports have shown how we sometimes call vsock_*_has_data() when a vsock socket has been de-assigned from a transport (see …
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Medium 5.5
iomap: avoid avoid truncating 64-bit offset to 32 bits
In the Linux kernel, the following vulnerability has been resolved: iomap: avoid avoid truncating 64-bit offset to 32 bits on 32-bit kernels, iomap_write_delalloc_scan() was inadvertently using a 32-bit position due to folio_next_index() returning an unsigned…
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Medium 5.5
vsock/bpf: return early if transport is not assigned
In the Linux kernel, the following vulnerability has been resolved: vsock/bpf: return early if transport is not assigned Some of the core functions can only be called if the transport has been assigned. As Michal reported, a socket might have the transport at…
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Medium 5.5
afs: Fix merge preference rule failure condition
In the Linux kernel, the following vulnerability has been resolved: afs: Fix merge preference rule failure condition syzbot reported a lock held when returning to userspace[1]. This is because if argc is less than 0 and the function returns directly, the held…
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Medium 5.5
net/mlx5e: Fix inversion dependency warning while enabling IPsec tunnel
In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Fix inversion dependency warning while enabling IPsec tunnel Attempt to enable IPsec packet offload in tunnel mode in debug kernel generates the following kernel panic, which is ha…
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Medium 5.5
net/mlx5: Clear port select structure when fail to create
In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Clear port select structure when fail to create Clear the port select structure on error so no stale values left after definers are destroyed. That's because the mlx5_lag_destroy_de…
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Medium 5.5
bpf: Fix bpf_sk_select_reuseport() memory leak
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix bpf_sk_select_reuseport() memory leak As pointed out in the original comment, lookup in sockmap can return a TCP ESTABLISHED socket. Such TCP socket may have had SO_ATTACH_REUSEPORT_…
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Medium 5.5
USB: serial: quatech2: fix null-ptr-deref in qt2_process_read_urb()
In the Linux kernel, the following vulnerability has been resolved: USB: serial: quatech2: fix null-ptr-deref in qt2_process_read_urb() This patch addresses a null-ptr-deref in qt2_process_read_urb() due to an incorrect bounds check in the following: if (newp…
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Medium 5.5
scsi: storvsc: Ratelimit warning logs to prevent VM denial of service
In the Linux kernel, the following vulnerability has been resolved: scsi: storvsc: Ratelimit warning logs to prevent VM denial of service If there's a persistent error in the hypervisor, the SCSI warning for failed I/O can flood the kernel log and max out CPU…
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Medium 5.5
fs/proc: fix softlockup in __read_vmcore (part 2)
In the Linux kernel, the following vulnerability has been resolved: fs/proc: fix softlockup in __read_vmcore (part 2) Since commit 5cbcb62dddf5 ("fs/proc: fix softlockup in __read_vmcore") the number of softlockups in __read_vmcore at kdump time have gone dow…
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Medium 4.7
gpio: aggregator: protect driver attr handlers against module unload
In the Linux kernel, the following vulnerability has been resolved: gpio: aggregator: protect driver attr handlers against module unload Both new_device_store and delete_device_store touch module global resources (e.g. gpio_aggregator_lock). To prevent race c…
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Unscored —
RDMA/bnxt_re: Avoid CPU lockups due fifo occupancy check loop
In the Linux kernel, the following vulnerability has been resolved: RDMA/bnxt_re: Avoid CPU lockups due fifo occupancy check loop Driver waits indefinitely for the fifo occupancy to go below a threshold as soon as the pacing interrupt is received. This can ca…
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Unscored —
fs: relax assertions on failure to encode file handles
In the Linux kernel, the following vulnerability has been resolved: fs: relax assertions on failure to encode file handles Encoding file handles is usually performed by a filesystem >encode_fh() method that may fail for various reasons. The legacy users of ex…
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Unscored —
mac802154: check local interfaces before deleting sdata list
In the Linux kernel, the following vulnerability has been resolved: mac802154: check local interfaces before deleting sdata list syzkaller reported a corrupted list in ieee802154_if_remove. [1] Remove an IEEE 802.15.4 network interface after unregister an IEE…
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Unscored —
pmdomain: imx8mp-blk-ctrl: add missing loop break condition
In the Linux kernel, the following vulnerability has been resolved: pmdomain: imx8mp-blk-ctrl: add missing loop break condition Currently imx8mp_blk_ctrl_remove() will continue the for loop until an out-of-bounds exception occurs. pstate: 60000005 (nZCv daif …
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Unscored —
openvswitch: fix lockup on tx to unregistering netdev with carrier
In the Linux kernel, the following vulnerability has been resolved: openvswitch: fix lockup on tx to unregistering netdev with carrier Commit in a fixes tag attempted to fix the issue in the following sequence of calls: do_output -> ovs_vport_send -> dev_queu…
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Unscored —
gpio: xilinx: Convert gpio_lock to raw spinlock
In the Linux kernel, the following vulnerability has been resolved: gpio: xilinx: Convert gpio_lock to raw spinlock irq_chip functions may be called in raw spinlock context. Therefore, we must also use a raw spinlock for our own internal locking. This fixes t…
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Unscored —
cachestat: fix page cache statistics permission checking
In the Linux kernel, the following vulnerability has been resolved: cachestat: fix page cache statistics permission checking When the 'cachestat()' system call was added in commit cf264e1329fb ("cachestat: implement cachestat syscall"), it was meant to be a m…
References
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report
https://ubuntu.com/security/CVE-2024-50157
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report
https://ubuntu.com/security/CVE-2024-53124
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report
https://ubuntu.com/security/CVE-2024-57924
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report
https://ubuntu.com/security/CVE-2024-57948
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report
https://ubuntu.com/security/CVE-2024-57949
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report
https://ubuntu.com/security/CVE-2024-57951
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report
https://ubuntu.com/security/CVE-2024-57952
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report
https://ubuntu.com/security/CVE-2025-21665
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report
https://ubuntu.com/security/CVE-2025-21666
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report
https://ubuntu.com/security/CVE-2025-21667
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report
https://ubuntu.com/security/CVE-2025-21668
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report
https://ubuntu.com/security/CVE-2025-21669
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report
https://ubuntu.com/security/CVE-2025-21670
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report
https://ubuntu.com/security/CVE-2025-21672
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report
https://ubuntu.com/security/CVE-2025-21673
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report
https://ubuntu.com/security/CVE-2025-21674
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report
https://ubuntu.com/security/CVE-2025-21675
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report
https://ubuntu.com/security/CVE-2025-21676
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report
https://ubuntu.com/security/CVE-2025-21678
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report
https://ubuntu.com/security/CVE-2025-21680
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report
https://ubuntu.com/security/CVE-2025-21681
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report
https://ubuntu.com/security/CVE-2025-21682
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report
https://ubuntu.com/security/CVE-2025-21683
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report
https://ubuntu.com/security/CVE-2025-21684
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report
https://ubuntu.com/security/CVE-2025-21689
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report
https://ubuntu.com/security/CVE-2025-21690
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report
https://ubuntu.com/security/CVE-2025-21691
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report
https://ubuntu.com/security/CVE-2025-21692
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report
https://ubuntu.com/security/CVE-2025-21694
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report
https://ubuntu.com/security/CVE-2025-21697
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report
https://ubuntu.com/security/CVE-2025-21699
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report
https://ubuntu.com/security/CVE-2025-21943