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:
- Block layer subsystem;
- Character device driver;
- Hardware crypto device drivers;
- GPU drivers;
- Media drivers;
- Network drivers;
- SCSI subsystem;
- USB Gadget drivers;
- Framebuffer layer;
- Ceph distributed file system;
- File systems infrastructure;
- JFS file system;
- Network file system (NFS) client;
- NILFS2 file system;
- SMB network file system;
- Netfilter;
- CAN network layer;
- IPv6 networking;
- MAC80211 subsystem;
- Netlink;
- Network traffic control;
- SCTP protocol;
- TIPC protocol;
(CVE-2023-52664, CVE-2024-26974, CVE-2024-49944, CVE-2024-50256,
CVE-2024-35864, CVE-2025-21971, CVE-2023-52741, CVE-2024-50296,
CVE-2024-50237, CVE-2021-47191, CVE-2024-46771, CVE-2024-56770,
CVE-2021-47163, CVE-2024-53063, CVE-2024-53140, CVE-2024-36015,
CVE-2024-56650, CVE-2024-53173, CVE-2024-53066, CVE-2024-26689,
CVE-2024-56651, CVE-2024-36934, CVE-2024-56598, CVE-2021-47219,
CVE-2024-26915, CVE-2024-46780, CVE-2024-49925, CVE-2023-52458,
CVE-2021-47150, CVE-2024-56631, CVE-2024-26996, CVE-2023-52927,
CVE-2024-56642)
Fixed packages 3
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · Pro FIPS-updates 18.04 LTS Pro:FIPS-updates:18.04:LTS | linux-aws-fips | 4.15.0-2118.124 |
| Ubuntu · Pro FIPS-updates 18.04 LTS Pro:FIPS-updates:18.04:LTS | linux-fips | 4.15.0-1135.146 |
| Ubuntu · Pro FIPS-updates 18.04 LTS Pro:FIPS-updates:18.04:LTS | linux-gcp-fips | 4.15.0-2081.87 |
Vulnerabilities 33
-
Critical 9.8
cifs: Fix use-after-free in rdata->read_into_pages()
In the Linux kernel, the following vulnerability has been resolved: cifs: Fix use-after-free in rdata->read_into_pages() When the network status is unstable, use-after-free may occur when read data from the server. BUG: KASAN: use-after-free in readpages_fill…
-
Critical 9.8
smb: client: fix potential UAF in smb2_is_valid_lease_break()
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix potential UAF in smb2_is_valid_lease_break() Skip sessions that are being teared down (status == SES_EXITING) to avoid UAF.
-
Critical 9.8
nfs: Fix KMSAN warning in decode_getfattr_attrs()
In the Linux kernel, the following vulnerability has been resolved: nfs: Fix KMSAN warning in decode_getfattr_attrs() Fix the following KMSAN warning: CPU: 1 UID: 0 PID: 7651 Comm: cp Tainted: G B Tainted: [B]=BAD_PAGE Hardware name: QEMU Standard PC (Q35 + I…
-
High 8.8
ceph: prevent use-after-free in encode_cap_msg()
In the Linux kernel, the following vulnerability has been resolved: ceph: prevent use-after-free in encode_cap_msg() In fs/ceph/caps.c, in encode_cap_msg(), "use after free" error was caught by KASAN at this line - 'ceph_buffer_get(arg->xattr_buf);'. This imp…
-
High 8.8
can: hi311x: hi3110_can_ist(): fix potential use-after-free
In the Linux kernel, the following vulnerability has been resolved: can: hi311x: hi3110_can_ist(): fix potential use-after-free The commit a22bd630cfff ("can: hi311x: do not report txerr and rxerr during bus-off") removed the reporting of rxerr and txerr even…
-
High 7.8
tipc: wait and exit until all work queues are done
In the Linux kernel, the following vulnerability has been resolved: tipc: wait and exit until all work queues are done On some host, a crash could be triggered simply by repeating these commands several times: # modprobe tipc # tipc bearer enable media udp na…
-
High 7.8
net: atlantic: eliminate double free in error handling logic
In the Linux kernel, the following vulnerability has been resolved: net: atlantic: eliminate double free in error handling logic Driver has a logic leak in ring data allocation/free, where aq_ring_free could be called multiple times on same ring, if system is…
-
High 7.8CVE-2023-52927 Public exploit
netfilter: allow exp not to be removed in nf_ct_find_expectation
In the Linux kernel, the following vulnerability has been resolved: netfilter: allow exp not to be removed in nf_ct_find_expectation Currently nf_conntrack_in() calling nf_ct_find_expectation() will remove the exp from the hash table. However, in some scenari…
-
High 7.8
crypto: qat - resolve race condition during AER recovery
In the Linux kernel, the following vulnerability has been resolved: crypto: qat - resolve race condition during AER recovery During the PCI AER system's error recovery process, the kernel driver may encounter a race condition with freeing the reset_data struc…
-
High 7.8
usb: gadget: f_ncm: Fix UAF ncm object at re-bind after usb ep transport error
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_ncm: Fix UAF ncm object at re-bind after usb ep transport error When ncm function is working and then stop usb0 interface for link down, eth_stop() is called. At this piont, ac…
-
High 7.8
can: bcm: Remove proc entry when dev is unregistered.
In the Linux kernel, the following vulnerability has been resolved: can: bcm: Remove proc entry when dev is unregistered. syzkaller reported a warning in bcm_connect() below. [0] The repro calls connect() to vxcan1, removes vxcan1, and calls connect() with if…
-
High 7.8
nilfs2: protect references to superblock parameters exposed in sysfs
In the Linux kernel, the following vulnerability has been resolved: nilfs2: protect references to superblock parameters exposed in sysfs The superblock buffers of nilfs2 can not only be overwritten at runtime for modifications/repairs, but they are also regul…
-
High 7.8
wifi: mac80211: do not pass a stopped vif to the driver in .get_txpower
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: do not pass a stopped vif to the driver in .get_txpower Avoid potentially crashing in the driver because of uninitialized private data
-
High 7.8
media: dvbdev: prevent the risk of out of memory access
In the Linux kernel, the following vulnerability has been resolved: media: dvbdev: prevent the risk of out of memory access The dvbdev contains a static variable used to store dvb minors. The behavior of it depends if CONFIG_DVB_DYNAMIC_MINORS is set or not. …
-
High 7.8
netlink: terminate outstanding dump on socket close
In the Linux kernel, the following vulnerability has been resolved: netlink: terminate outstanding dump on socket close Netlink supports iterative dumping of data. It provides the families the following ops: - start - (optional) kicks off the dumping process …
-
High 7.8
NFSv4.0: Fix a use-after-free problem in the asynchronous open()
In the Linux kernel, the following vulnerability has been resolved: NFSv4.0: Fix a use-after-free problem in the asynchronous open() Yang Erkun reports that when two threads are opening files at the same time, and are forced to abort before a reply is seen, t…
-
High 7.8
scsi: sg: Fix slab-use-after-free read in sg_release()
In the Linux kernel, the following vulnerability has been resolved: scsi: sg: Fix slab-use-after-free read in sg_release() Fix a use-after-free bug in sg_release(), detected by syzbot with KASAN: BUG: KASAN: slab-use-after-free in lock_release+0x151/0xa30 ker…
-
High 7.8
tipc: Fix use-after-free of kernel socket in cleanup_bearer().
In the Linux kernel, the following vulnerability has been resolved: tipc: Fix use-after-free of kernel socket in cleanup_bearer(). syzkaller reported a use-after-free of UDP kernel socket in cleanup_bearer() without repro. [0][1] When bearer_disable() calls t…
-
High 7.8
net_sched: Prevent creation of classes with TC_H_ROOT
In the Linux kernel, the following vulnerability has been resolved: net_sched: Prevent creation of classes with TC_H_ROOT The function qdisc_tree_reduce_backlog() uses TC_H_ROOT as a termination condition when traversing up the qdisc tree to update parent bac…
-
High 7.5
netfilter: nf_reject_ipv6: fix potential crash in nf_send_reset6()
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_reject_ipv6: fix potential crash in nf_send_reset6() I got a syzbot report without a repro [1] crashing in nf_send_reset6() I think the issue is that dev->hard_header_len is zer…
-
High 7.1
scsi: scsi_debug: Fix out-of-bound read in resp_readcap16()
In the Linux kernel, the following vulnerability has been resolved: scsi: scsi_debug: Fix out-of-bound read in resp_readcap16() The following warning was observed running syzkaller: [ 3813.830724] sg_write: data in/out 65466/242 bytes for SCSI command 0x9e-- …
-
High 7.1
scsi: scsi_debug: Fix out-of-bound read in resp_report_tgtpgs()
In the Linux kernel, the following vulnerability has been resolved: scsi: scsi_debug: Fix out-of-bound read in resp_report_tgtpgs() The following issue was observed running syzkaller: BUG: KASAN: slab-out-of-bounds in memcpy include/linux/string.h:377 [inline…
-
High 7.1
fbdev: efifb: Register sysfs groups through driver core
In the Linux kernel, the following vulnerability has been resolved: fbdev: efifb: Register sysfs groups through driver core The driver core can register and cleanup sysfs groups already. Make use of that functionality to simplify the error handling and cleanu…
-
High 7.1
jfs: array-index-out-of-bounds fix in dtReadFirst
In the Linux kernel, the following vulnerability has been resolved: jfs: array-index-out-of-bounds fix in dtReadFirst The value of stbl can be sometimes out of bounds due to a bad filesystem. Added a check with appopriate return of error code in that case.
-
High 7.1
netfilter: x_tables: fix LED ID check in led_tg_check()
In the Linux kernel, the following vulnerability has been resolved: netfilter: x_tables: fix LED ID check in led_tg_check() Syzbot has reported the following BUG detected by KASAN: BUG: KASAN: slab-out-of-bounds in strlen+0x58/0x70 Read of size 1 at addr ffff…
-
Medium 5.5
drm/amdgpu: Reset IH OVERFLOW_CLEAR bit
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Reset IH OVERFLOW_CLEAR bit Allows us to detect subsequent IH ring buffer overflows as well.
-
Medium 5.5
net: hns3: fix kernel crash when uninstalling driver
In the Linux kernel, the following vulnerability has been resolved: net: hns3: fix kernel crash when uninstalling driver When the driver is uninstalled and the VF is disabled concurrently, a kernel crash occurs. The reason is that the two actions call functio…
-
Medium 5.5
net/sched: netem: account for backlog updates from child qdisc
In the Linux kernel, the following vulnerability has been resolved: net/sched: netem: account for backlog updates from child qdisc In general, 'qlen' of any classful qdisc should keep track of the number of packets that the qdisc itself and all of its childre…
-
Unscored —
net: fec: fix the potential memory leak in fec_enet_init()
In the Linux kernel, the following vulnerability has been resolved: net: fec: fix the potential memory leak in fec_enet_init() If the memory allocated for cbd_base is failed, it should free the memory allocated for the queues, otherwise it causes memory leak.…
-
Unscored —
block: add check that partition length needs to be aligned with block size
In the Linux kernel, the following vulnerability has been resolved: block: add check that partition length needs to be aligned with block size Before calling add partition or resize partition, there is no check on whether the length is aligned with the logica…
-
Unscored —
ppdev: Add an error check in register_device
In the Linux kernel, the following vulnerability has been resolved: ppdev: Add an error check in register_device In register_device, the return value of ida_simple_get is unchecked, in witch ida_simple_get will use an invalid index value. To address this issu…
-
Unscored —
bna: ensure the copied buf is NUL terminated
In the Linux kernel, the following vulnerability has been resolved: bna: ensure the copied buf is NUL terminated Currently, we allocate a nbytes-sized kernel buffer and copy nbytes from userspace to that buffer. Later, we use sscanf on this buffer but we don'…
-
Unscored —
sctp: set sk_state back to CLOSED if autobind fails in sctp_listen_start
In the Linux kernel, the following vulnerability has been resolved: sctp: set sk_state back to CLOSED if autobind fails in sctp_listen_start In sctp_listen_start() invoked by sctp_inet_listen(), it should set the sk_state back to CLOSED if sctp_autobind() fai…
References
-
report
https://ubuntu.com/security/CVE-2021-47150
-
report
https://ubuntu.com/security/CVE-2021-47163
-
report
https://ubuntu.com/security/CVE-2021-47191
-
report
https://ubuntu.com/security/CVE-2021-47219
-
report
https://ubuntu.com/security/CVE-2023-52458
-
report
https://ubuntu.com/security/CVE-2023-52664
-
report
https://ubuntu.com/security/CVE-2023-52741
-
report
https://ubuntu.com/security/CVE-2023-52927
-
report
https://ubuntu.com/security/CVE-2024-26689
-
report
https://ubuntu.com/security/CVE-2024-26915
-
report
https://ubuntu.com/security/CVE-2024-26974
-
report
https://ubuntu.com/security/CVE-2024-26996
-
report
https://ubuntu.com/security/CVE-2024-35864
-
report
https://ubuntu.com/security/CVE-2024-36015
-
report
https://ubuntu.com/security/CVE-2024-36934
-
report
https://ubuntu.com/security/CVE-2024-46771
-
report
https://ubuntu.com/security/CVE-2024-46780
-
report
https://ubuntu.com/security/CVE-2024-49925
-
report
https://ubuntu.com/security/CVE-2024-49944
-
report
https://ubuntu.com/security/CVE-2024-50237
-
report
https://ubuntu.com/security/CVE-2024-50256
-
report
https://ubuntu.com/security/CVE-2024-50296
-
report
https://ubuntu.com/security/CVE-2024-53063
-
report
https://ubuntu.com/security/CVE-2024-53066
-
report
https://ubuntu.com/security/CVE-2024-53140
-
report
https://ubuntu.com/security/CVE-2024-53173
-
report
https://ubuntu.com/security/CVE-2024-56598
-
report
https://ubuntu.com/security/CVE-2024-56631
-
report
https://ubuntu.com/security/CVE-2024-56642
-
report
https://ubuntu.com/security/CVE-2024-56650
-
report
https://ubuntu.com/security/CVE-2024-56651
-
report
https://ubuntu.com/security/CVE-2024-56770
-
report
https://ubuntu.com/security/CVE-2025-21971