🛡️ CVE-2024-49966 on Ubuntu — linux

⚪ Unknown ✅ No Known Exploit OSV

N/A

CVSS Score

0 Low4 Medium7 High9 Critical10

Description

In the Linux kernel, the following vulnerability has been resolved: ocfs2: cancel dqi_sync_work before freeing oinfo ocfs2_global_read_info() will initialize and schedule dqi_sync_work at the end, if error occurs after successfully reading global quota, it will trigger the following warning with CONFIG_DEBUG_OBJECTS_* enabled: ODEBUG: free active (active state 0) object: 00000000d8b0ce28 object type: timer_list hint: qsync_work_fn+0x0/0x16c This reports that there is an active delayed work when freeing oinfo in error handling, so cancel dqi_sync_work first. BTW, return status instead of -1 when .read_file_info fails.

Distribution advisory

This page covers CVE-2024-49966 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-2024-49966 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-2024-49966 is recorded against 134 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
linux-azure (fixed in 6.8.0-1025.30)
linux-azure-4.15
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 110 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-5.19
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
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
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 19 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

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-w6xv-3fg4-grm5 (published 29 Jan 2026)
CGA-mcwh-q4vm-9f29 (published 29 Jan 2026)
CGA-m3jq-vcq5-mqrx (published 7 Jan 2026)
CGA-6xjj-65cr-mc7v (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-2022-50496 (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-2022-50507 (7.8 High, published 4 Oct 2025)
CVE-2022-50423 (7.8 High, published 1 Oct 2025)

CVE-2024-49966 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

BellSoft — BELL-CVE-2024-49966 Base record — CVE-2024-49966 Debian — DEBIAN-CVE-2024-49966

Details

Severity Unknown

CVSS Score N/A

CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE N/A

Public Exploit ✅ No

Source OSV

Published 2024-10-21

Updated 2026-08-20

Modified 2026-08-19

Fix URL N/A

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	—	—
linux-azure	—	6.8.0-1025.30
linux-azure-4.15	—	—
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-5.19	—	—
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	—	—
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	—	—
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

REPORT https://ubuntu.com/security/CVE-2024-49966

REPORT https://www.cve.org/CVERecord?id=CVE-2024-49966

REPORT https://git.kernel.org/linus/35fccce29feb3706f649726d410122dd81b92c18

REPORT https://git.kernel.org/stable/c/14114d8148db07e7946fb06b56a50cfa425e26c7

REPORT https://git.kernel.org/stable/c/4173d1277c00baeedaaca76783e98b8fd0e3c08d

REPORT https://git.kernel.org/stable/c/bbf41277df8b33fbedf4750a9300c147e8f104eb

REPORT https://git.kernel.org/stable/c/ef768020366f47d23f39c4f57bcb03af6d1e24b3

REPORT https://git.kernel.org/stable/c/a4346c04d055bf7e184c18a73dbd23b6a9811118

REPORT https://git.kernel.org/stable/c/0d707a33c84b371cb66120e198eed3374726ddd8

REPORT https://git.kernel.org/stable/c/35fccce29feb3706f649726d410122dd81b92c18

ADVISORY https://ubuntu.com/security/notices/USN-7166-1

ADVISORY https://ubuntu.com/security/notices/USN-7166-2

ADVISORY https://ubuntu.com/security/notices/USN-7166-3

ADVISORY https://ubuntu.com/security/notices/USN-7186-1

ADVISORY https://ubuntu.com/security/notices/USN-7186-2

ADVISORY https://ubuntu.com/security/notices/USN-7194-1

ADVISORY https://ubuntu.com/security/notices/USN-7166-4

ADVISORY https://ubuntu.com/security/notices/USN-7276-1

ADVISORY https://ubuntu.com/security/notices/USN-7277-1

ADVISORY https://ubuntu.com/security/notices/USN-7293-1

ADVISORY https://ubuntu.com/security/notices/USN-7294-1

ADVISORY https://ubuntu.com/security/notices/USN-7295-1

ADVISORY https://ubuntu.com/security/notices/USN-7301-1

ADVISORY https://ubuntu.com/security/notices/USN-7303-1

ADVISORY https://ubuntu.com/security/notices/USN-7304-1

ADVISORY https://ubuntu.com/security/notices/USN-7294-2

ADVISORY https://ubuntu.com/security/notices/USN-7294-3

ADVISORY https://ubuntu.com/security/notices/USN-7303-2

ADVISORY https://ubuntu.com/security/notices/USN-7310-1

ADVISORY https://ubuntu.com/security/notices/USN-7311-1

ADVISORY https://ubuntu.com/security/notices/USN-7303-3

ADVISORY https://ubuntu.com/security/notices/USN-7294-4

ADVISORY https://ubuntu.com/security/notices/USN-7384-1

ADVISORY https://ubuntu.com/security/notices/USN-7385-1

ADVISORY https://ubuntu.com/security/notices/USN-7386-1

ADVISORY https://ubuntu.com/security/notices/USN-7393-1

ADVISORY https://ubuntu.com/security/notices/USN-7384-2

ADVISORY https://ubuntu.com/security/notices/USN-7401-1

ADVISORY https://ubuntu.com/security/notices/USN-7403-1

ADVISORY https://ubuntu.com/security/notices/USN-7413-1

ADVISORY https://ubuntu.com/security/notices/USN-7468-1

ADVISORY https://ubuntu.com/security/notices/USN-7539-1

ADVISORY https://ubuntu.com/security/notices/USN-7540-1

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🛡️ CVE-2024-49966 on Ubuntu — linux

Description

Distribution advisory

How this vulnerability can be exploited

CVSS metrics in full

Weakness class

Affected software

Timeline and source

References

Other advisories for this package

Same weakness in other software

CVE-2024-49966 on other distributions

Is linux part of your stack?

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