🛡️ CVE-2024-49924 on Ubuntu — linux
Description
In the Linux kernel, the following vulnerability has been resolved: fbdev: pxafb: Fix possible use after free in pxafb_task() In the pxafb_probe function, it calls the pxafb_init_fbinfo function, after which &fbi->task is associated with pxafb_task. Moreover, within this pxafb_init_fbinfo function, the pxafb_blank function within the &pxafb_ops struct is capable of scheduling work. If we remove the module which will call pxafb_remove to make cleanup, it will call unregister_framebuffer function which can call do_unregister_framebuffer to free fbi->fb through put_fb_info(fb_info), while the work mentioned above will be used. The sequence of operations that may lead to a UAF bug is as follows: CPU0 CPU1 | pxafb_task pxafb_remove | unregister_framebuffer(info) | do_unregister_framebuffer(fb_info) | put_fb_info(fb_info) | // free fbi->fb | set_ctrlr_state(fbi, state) | __pxafb_lcd_power(fbi, 0) | fbi->lcd_power(on, &fbi->fb.var) | //use fbi->fb Fix it by ensuring that the work is canceled before proceeding with the cleanup in pxafb_remove. Note that only root user can remove the driver at runtime.
Distribution advisory
This page covers CVE-2024-49924 as tracked by Ubuntu, for the package linux. The fix is available in version 6.8.0-54.56; earlier versions remain affected.
How this vulnerability can be exploited
This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.
CVSS metrics in full
The score comes from this vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Attack vector: Local — a local account, shell or session on the host is needed.
- Attack complexity: Low — the attack works reliably, with no preparation.
- Privileges required: Low — an ordinary user account is enough.
- User interaction: None — nobody has to be tricked into anything.
- Scope: Unchanged — the damage stays inside the vulnerable component.
- Confidentiality impact: High — total loss, or loss the attacker controls.
- Integrity impact: High — total loss, or loss the attacker controls.
- Availability impact: High — total loss, or loss the attacker controls.
Weakness class
UBUNTU-CVE-2024-49924 is classified as CWE-416: Use After Free. Memory is used after being released, so its contents may already belong to something else.
Affected software
UBUNTU-CVE-2024-49924 is recorded against 135 packages.
- linux (fixed in 6.8.0-54.56)
- linux-allwinner-5.19
- linux-aws (fixed in 6.8.0-1023.25)
- linux-aws-5.0
- linux-aws-5.11
- linux-aws-5.13
- linux-aws-5.15 (fixed in 5.15.0-1073.79~20.04.1)
- linux-aws-5.19
- linux-aws-5.3
- linux-aws-5.4 (fixed in 5.4.0-1142.152~18.04.1)
- linux-aws-5.8
- linux-aws-6.2
- linux-aws-6.5
- linux-aws-6.8 (fixed in 6.8.0-1023.25~22.04.1)
- linux-aws-fips (fixed in 5.15.0-1073.79+fips1)
- linux-aws-hwe (fixed in 4.15.0-1185.198~16.04.1)
- linux-azure (fixed in 6.8.0-1025.30)
- linux-azure-4.15 (fixed in 4.15.0-1193.208)
- linux-azure-5.11
- linux-azure-5.13
- linux-azure-5.15 (fixed in 5.15.0-1078.87~20.04.1)
- linux-azure-5.19
- linux-azure-5.3
- linux-azure-5.4 (fixed in 5.4.0-1145.152~18.04.1)
Show the remaining 111 packages
- linux-azure-5.8
- linux-azure-6.11 (fixed in 6.11.0-1012.12~24.04.1)
- linux-azure-6.2
- linux-azure-6.5
- linux-azure-6.8 (fixed in 6.8.0-1025.30~22.04.1)
- linux-azure-edge
- linux-azure-fde
- linux-azure-fde-5.15 (fixed in 5.15.0-1114.123~20.04.1)
- linux-azure-fde-5.19
- linux-azure-fde-6.2
- linux-azure-fips (fixed in 5.15.0-1078.87+fips1)
- linux-azure-nvidia (fixed in 6.8.0-1014.15)
- linux-bluefield
- linux-fips (fixed in 6.8.0-78.78+fips1)
- linux-gcp (fixed in 6.8.0-1024.26)
- linux-gcp-4.15 (fixed in 4.15.0-1178.195)
- linux-gcp-5.11
- linux-gcp-5.13
- linux-gcp-5.15 (fixed in 5.15.0-1072.80~20.04.1)
- linux-gcp-5.19
- linux-gcp-5.3
- linux-gcp-5.4 (fixed in 5.4.0-1143.152~18.04.1)
- linux-gcp-5.8
- linux-gcp-6.11 (fixed in 6.11.0-1011.11~24.04.1)
- linux-gcp-6.2
- linux-gcp-6.5
- linux-gcp-6.8 (fixed in 6.8.0-1024.26~22.04.1)
- linux-gcp-fips (fixed in 5.15.0-1072.80+fips1)
- linux-gke (fixed in 6.8.0-1019.23)
- linux-gke-4.15
- linux-gke-5.15
- linux-gke-5.4
- linux-gkeop (fixed in 6.8.0-1006.8)
- linux-gkeop-5.15
- linux-gkeop-5.4
- linux-hwe
- linux-hwe-5.11
- linux-hwe-5.13
- linux-hwe-5.15 (fixed in 5.15.0-127.137~20.04.1)
- linux-hwe-5.19
- linux-hwe-5.4 (fixed in 5.4.0-208.228~18.04.1)
- linux-hwe-5.8
- linux-hwe-6.2
- linux-hwe-6.5
- linux-hwe-6.8 (fixed in 6.8.0-57.59~22.04.1)
- linux-hwe-edge
- linux-ibm (fixed in 6.8.0-1022.22)
- linux-ibm-5.15 (fixed in 5.15.0-1066.69~20.04.1)
- linux-ibm-5.4 (fixed in 5.4.0-1086.91~18.04.1)
- linux-ibm-6.8 (fixed in 6.8.0-1023.23~22.04.1)
- linux-intel-5.13
- linux-intel-iot-realtime (fixed in 5.15.0-1066.68)
- linux-intel-iotg (fixed in 5.15.0-1071.77)
- linux-intel-iotg-5.15 (fixed in 5.15.0-1071.77~20.04.1)
- linux-iot (fixed in 5.4.0-1048.51)
- linux-kvm (fixed in 5.15.0-1070.75)
- linux-lowlatency (fixed in 6.8.0-54.56.1)
- linux-lowlatency-hwe-5.15 (fixed in 5.15.0-127.137~20.04.1)
- linux-lowlatency-hwe-5.19
- linux-lowlatency-hwe-6.2
- linux-lowlatency-hwe-6.5
- linux-lowlatency-hwe-6.8 (fixed in 6.8.0-54.56.1~22.04.1)
- linux-lts-xenial (fixed in 4.4.0-273.307~14.04.1)
- linux-nvidia (fixed in 6.8.0-1022.25)
- linux-nvidia-6.11 (fixed in 6.11.0-1007.7)
- linux-nvidia-6.2
- linux-nvidia-6.5
- linux-nvidia-6.8 (fixed in 6.8.0-1022.25~22.04.2)
- linux-nvidia-lowlatency (fixed in 6.8.0-1022.25.2)
- linux-nvidia-tegra (fixed in 5.15.0-1032.32)
- linux-nvidia-tegra-5.15 (fixed in 5.15.0-1032.32~20.04.1)
- linux-nvidia-tegra-igx (fixed in 5.15.0-1020.20)
- linux-oem
- linux-oem-5.10
- linux-oem-5.13
- linux-oem-5.14
- linux-oem-5.17
- linux-oem-5.6
- linux-oem-6.0
- linux-oem-6.1
- linux-oem-6.11 (fixed in 6.11.0-1015.15)
- linux-oem-6.5
- linux-oem-6.8 (fixed in 6.8.0-1024.24)
- linux-oracle (fixed in 6.8.0-1020.21)
- linux-oracle-5.0
- linux-oracle-5.11
- linux-oracle-5.13
- linux-oracle-5.15 (fixed in 5.15.0-1071.77~20.04.1)
- linux-oracle-5.3
- linux-oracle-5.4 (fixed in 5.4.0-1138.147~18.04.1)
- linux-oracle-5.8
- linux-oracle-6.5
- linux-oracle-6.8 (fixed in 6.8.0-1020.21~22.04.1)
- linux-raspi (fixed in 6.8.0-1019.23)
- linux-raspi-5.4 (fixed in 5.4.0-1129.142~18.04.1)
- linux-raspi-realtime (fixed in 6.8.0-2018.19)
- linux-raspi2
- linux-realtime (fixed in 6.8.1-1016.17)
- linux-realtime-6.8 (fixed in 6.8.1-1016.17~22.04.1)
- linux-riscv (fixed in 6.8.0-53.55.1)
- linux-riscv-5.11
- linux-riscv-5.15 (fixed in 5.15.0-1069.73~20.04.1)
- linux-riscv-5.19
- linux-riscv-5.8
- linux-riscv-6.5
- linux-riscv-6.8 (fixed in 6.8.0-53.55.1~22.04.1)
- linux-starfive-5.19
- linux-starfive-6.2
- linux-starfive-6.5
- linux-xilinx (fixed in 6.8.0-1017.18)
- linux-xilinx-zynqmp (fixed in 5.15.0-1039.43)
Timeline and source
Published on 21 October 2024 and last revised on 18 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.
References
ubuntu.com (Report)
www.cve.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
Other advisories for this package
linux has other advisories on record. If you are patching this one, these are worth checking on the same host:
- DEBIAN-CVE-2022-4994 (published 30 Jul 2026)
- CVE-2026-35233 (4.4 Medium, published 1 May 2026)
- CVE-2026-21996 (3.3 Low, published 1 May 2026)
- CVE-2026-21991 (5.5 Medium, published 16 Mar 2026)
- CGA-mcwh-q4vm-9f29 (published 29 Jan 2026)
- CGA-w6xv-3fg4-grm5 (published 29 Jan 2026)
- CGA-4fpx-x3w2-4hfv (published 7 Jan 2026)
- CGA-fv2v-4h6c-q367 (published 7 Jan 2026)
Same weakness in other software
These advisories are the same class of weakness (CWE-416: Use After Free) in other software:
- CVE-2022-21540 (5.3 Medium, published 8 May 2026)
- CVE-2022-50552 (7.8 High, published 7 Oct 2025)
- CVE-2022-50542 (7.8 High, published 7 Oct 2025)
- CVE-2022-50507 (7.8 High, published 4 Oct 2025)
- CVE-2022-50496 (7.8 High, published 4 Oct 2025)
- CVE-2022-50492 (7.8 High, published 4 Oct 2025)
- CVE-2022-50488 (7.8 High, published 4 Oct 2025)
- CVE-2022-50454 (7.8 High, published 1 Oct 2025)
CVE-2024-49924 on other distributions
Each distribution ships its own build and its own fixed version. Pick the one you run:
Details
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| linux | — | 6.8.0-54.56 |
| linux-allwinner-5.19 | — | — |
| linux-aws | — | 6.8.0-1023.25 |
| linux-aws-5.0 | — | — |
| linux-aws-5.11 | — | — |
| linux-aws-5.13 | — | — |
| linux-aws-5.15 | — | 5.15.0-1073.79~20.04.1 |
| linux-aws-5.19 | — | — |
| linux-aws-5.3 | — | — |
| linux-aws-5.4 | — | 5.4.0-1142.152~18.04.1 |
| linux-aws-5.8 | — | — |
| linux-aws-6.2 | — | — |
| linux-aws-6.5 | — | — |
| linux-aws-6.8 | — | 6.8.0-1023.25~22.04.1 |
| linux-aws-fips | — | 5.15.0-1073.79+fips1 |
| linux-aws-hwe | — | 4.15.0-1185.198~16.04.1 |
| linux-azure | — | 6.8.0-1025.30 |
| linux-azure-4.15 | — | 4.15.0-1193.208 |
| linux-azure-5.11 | — | — |
| linux-azure-5.13 | — | — |
| linux-azure-5.15 | — | 5.15.0-1078.87~20.04.1 |
| linux-azure-5.19 | — | — |
| linux-azure-5.3 | — | — |
| linux-azure-5.4 | — | 5.4.0-1145.152~18.04.1 |
| linux-azure-5.8 | — | — |
| linux-azure-6.11 | — | 6.11.0-1012.12~24.04.1 |
| linux-azure-6.2 | — | — |
| linux-azure-6.5 | — | — |
| linux-azure-6.8 | — | 6.8.0-1025.30~22.04.1 |
| linux-azure-edge | — | — |
| linux-azure-fde | — | — |
| linux-azure-fde-5.15 | — | 5.15.0-1114.123~20.04.1 |
| linux-azure-fde-5.19 | — | — |
| linux-azure-fde-6.2 | — | — |
| linux-azure-fips | — | 5.15.0-1078.87+fips1 |
| linux-azure-nvidia | — | 6.8.0-1014.15 |
| linux-bluefield | — | — |
| linux-fips | — | 6.8.0-78.78+fips1 |
| linux-gcp | — | 6.8.0-1024.26 |
| linux-gcp-4.15 | — | 4.15.0-1178.195 |
| linux-gcp-5.11 | — | — |
| linux-gcp-5.13 | — | — |
| linux-gcp-5.15 | — | 5.15.0-1072.80~20.04.1 |
| linux-gcp-5.19 | — | — |
| linux-gcp-5.3 | — | — |
| linux-gcp-5.4 | — | 5.4.0-1143.152~18.04.1 |
| linux-gcp-5.8 | — | — |
| linux-gcp-6.11 | — | 6.11.0-1011.11~24.04.1 |
| linux-gcp-6.2 | — | — |
| linux-gcp-6.5 | — | — |
| linux-gcp-6.8 | — | 6.8.0-1024.26~22.04.1 |
| linux-gcp-fips | — | 5.15.0-1072.80+fips1 |
| linux-gke | — | 6.8.0-1019.23 |
| linux-gke-4.15 | — | — |
| linux-gke-5.15 | — | — |
| linux-gke-5.4 | — | — |
| linux-gkeop | — | 6.8.0-1006.8 |
| linux-gkeop-5.15 | — | — |
| linux-gkeop-5.4 | — | — |
| linux-hwe | — | — |
| linux-hwe-5.11 | — | — |
| linux-hwe-5.13 | — | — |
| linux-hwe-5.15 | — | 5.15.0-127.137~20.04.1 |
| linux-hwe-5.19 | — | — |
| linux-hwe-5.4 | — | 5.4.0-208.228~18.04.1 |
| linux-hwe-5.8 | — | — |
| linux-hwe-6.2 | — | — |
| linux-hwe-6.5 | — | — |
| linux-hwe-6.8 | — | 6.8.0-57.59~22.04.1 |
| linux-hwe-edge | — | — |
| linux-ibm | — | 6.8.0-1022.22 |
| linux-ibm-5.15 | — | 5.15.0-1066.69~20.04.1 |
| linux-ibm-5.4 | — | 5.4.0-1086.91~18.04.1 |
| linux-ibm-6.8 | — | 6.8.0-1023.23~22.04.1 |
| linux-intel-5.13 | — | — |
| linux-intel-iot-realtime | — | 5.15.0-1066.68 |
| linux-intel-iotg | — | 5.15.0-1071.77 |
| linux-intel-iotg-5.15 | — | 5.15.0-1071.77~20.04.1 |
| linux-iot | — | 5.4.0-1048.51 |
| linux-kvm | — | 5.15.0-1070.75 |
| linux-lowlatency | — | 6.8.0-54.56.1 |
| linux-lowlatency-hwe-5.15 | — | 5.15.0-127.137~20.04.1 |
| linux-lowlatency-hwe-5.19 | — | — |
| linux-lowlatency-hwe-6.2 | — | — |
| linux-lowlatency-hwe-6.5 | — | — |
| linux-lowlatency-hwe-6.8 | — | 6.8.0-54.56.1~22.04.1 |
| linux-lts-xenial | — | 4.4.0-273.307~14.04.1 |
| linux-nvidia | — | 6.8.0-1022.25 |
| linux-nvidia-6.11 | — | 6.11.0-1007.7 |
| linux-nvidia-6.2 | — | — |
| linux-nvidia-6.5 | — | — |
| linux-nvidia-6.8 | — | 6.8.0-1022.25~22.04.2 |
| linux-nvidia-lowlatency | — | 6.8.0-1022.25.2 |
| linux-nvidia-tegra | — | 5.15.0-1032.32 |
| linux-nvidia-tegra-5.15 | — | 5.15.0-1032.32~20.04.1 |
| linux-nvidia-tegra-igx | — | 5.15.0-1020.20 |
| linux-oem | — | — |
| linux-oem-5.10 | — | — |
| linux-oem-5.13 | — | — |
| linux-oem-5.14 | — | — |
| linux-oem-5.17 | — | — |
| linux-oem-5.6 | — | — |
| linux-oem-6.0 | — | — |
| linux-oem-6.1 | — | — |
| linux-oem-6.11 | — | 6.11.0-1015.15 |
| linux-oem-6.5 | — | — |
| linux-oem-6.8 | — | 6.8.0-1024.24 |
| linux-oracle | — | 6.8.0-1020.21 |
| linux-oracle-5.0 | — | — |
| linux-oracle-5.11 | — | — |
| linux-oracle-5.13 | — | — |
| linux-oracle-5.15 | — | 5.15.0-1071.77~20.04.1 |
| linux-oracle-5.3 | — | — |
| linux-oracle-5.4 | — | 5.4.0-1138.147~18.04.1 |
| linux-oracle-5.8 | — | — |
| linux-oracle-6.5 | — | — |
| linux-oracle-6.8 | — | 6.8.0-1020.21~22.04.1 |
| linux-raspi | — | 6.8.0-1019.23 |
| linux-raspi-5.4 | — | 5.4.0-1129.142~18.04.1 |
| linux-raspi-realtime | — | 6.8.0-2018.19 |
| linux-raspi2 | — | — |
| linux-realtime | — | 6.8.1-1016.17 |
| linux-realtime-6.8 | — | 6.8.1-1016.17~22.04.1 |
| linux-riscv | — | 6.8.0-53.55.1 |
| linux-riscv-5.11 | — | — |
| linux-riscv-5.15 | — | 5.15.0-1069.73~20.04.1 |
| linux-riscv-5.19 | — | — |
| linux-riscv-5.8 | — | — |
| linux-riscv-6.5 | — | — |
| linux-riscv-6.8 | — | 6.8.0-53.55.1~22.04.1 |
| linux-starfive-5.19 | — | — |
| linux-starfive-6.2 | — | — |
| linux-starfive-6.5 | — | — |
| linux-xilinx | — | 6.8.0-1017.18 |
| linux-xilinx-zynqmp | — | 5.15.0-1039.43 |
References
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