Summary
Qualys discovered that several vulnerabilities existed in the AppArmor
Linux kernel Security Module (LSM). An unprivileged local attacker could
use these issues to load, replace, and remove arbitrary AppArmor profiles
causing denial of service, exposure of sensitive information (kernel
memory), local privilege escalation, or possibly escape a container.
(LP: #2143853)
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:
- x86 architecture;
- GPIO subsystem;
- GPU drivers;
- BTRFS file system;
- XFRM subsystem;
- IPv4 networking;
- IPv6 networking;
- MAC80211 subsystem;
- SMC sockets;
(CVE-2021-47599, CVE-2022-48875, CVE-2022-49072, CVE-2024-49927,
CVE-2024-56640, CVE-2025-21780, CVE-2025-40215)
Fixed packages 1
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · Pro FIPS-updates 20.04 LTS Pro:FIPS-updates:20.04:LTS | linux-azure-fips | 5.4.0-1160.166+fips1 |
Vulnerabilities 8
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Critical 9.8
net/smc: fix LGR and link use-after-free issue
In the Linux kernel, the following vulnerability has been resolved: net/smc: fix LGR and link use-after-free issue We encountered a LGR/link use-after-free issue, which manifested as the LGR/link refcnt reaching 0 early and entering the clear process, making …
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High 7.8
drm/amdgpu: avoid buffer overflow attach in smu_sys_set_pp_table()
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: avoid buffer overflow attach in smu_sys_set_pp_table() It malicious user provides a small pptable through sysfs and then a bigger pptable, it may cause buffer overflow attack in f…
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High 7.8
xfrm: delete x->tunnel as we delete x
In the Linux kernel, the following vulnerability has been resolved: xfrm: delete x->tunnel as we delete x The ipcomp fallback tunnels currently get deleted (from the various lists and hashtables) as the last user state that needed that fallback is destroyed (…
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Unscored —
btrfs: use latest_dev in btrfs_show_devname
In the Linux kernel, the following vulnerability has been resolved: btrfs: use latest_dev in btrfs_show_devname The test case btrfs/238 reports the warning below: WARNING: CPU: 3 PID: 481 at fs/btrfs/super.c:2509 btrfs_show_devname+0x104/0x1e8 [btrfs] CPU: 2 …
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Unscored —
wifi: mac80211: sdata can be NULL during AMPDU start
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: sdata can be NULL during AMPDU start ieee80211_tx_ba_session_handle_start() may get NULL for sdata when a deauthentication is ongoing. Here a trace triggering the race with th…
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Unscored —
gpio: Restrict usage of GPIO chip irq members before initialization
In the Linux kernel, the following vulnerability has been resolved: gpio: Restrict usage of GPIO chip irq members before initialization GPIO chip irq members are exposed before they could be completely initialized and this leads to race conditions. One such i…
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Unscored —CVE-2022-49267 Rejected
This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.
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Unscored —
x86/ioapic: Handle allocation failures gracefully
In the Linux kernel, the following vulnerability has been resolved: x86/ioapic: Handle allocation failures gracefully Breno observed panics when using failslab under certain conditions during runtime: can not alloc irq_pin_list (-1,0,20) Kernel panic - not sy…
References
-
report
https://ubuntu.com/security/CVE-2021-47599
-
report
https://ubuntu.com/security/CVE-2022-48875
-
report
https://ubuntu.com/security/CVE-2022-49072
-
report
https://ubuntu.com/security/CVE-2022-49267
-
report
https://ubuntu.com/security/CVE-2024-49927
-
report
https://ubuntu.com/security/CVE-2024-56640
-
report
https://ubuntu.com/security/CVE-2025-21780
-
report
https://ubuntu.com/security/CVE-2025-40215
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report
https://launchpad.net/bugs/2143853