can: m_can: m_can_tx_handler(): fix use after free of skb
Priority LOW 36CWE-416Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 3 fixed, 1 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.
Summary
In the Linux kernel, the following vulnerability has been resolved: can: m_can: m_can_tx_handler(): fix use after free of skb can_put_echo_skb() will clone skb then free the skb. Move the can_put_echo_skb() for the m_can version 3.0.x directly before the start of the xmit in hardware, similar to the 3.1.x branch.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00281 20th percentileScored 2026-11-07
Fix Partial Linux (Linux): 4.9.324, 4.14.289, 4.19.253 +6Red Hat: 1 advisoryRed Hat: 3 fixed, 1 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 3.18 and later | 4.9.324, 4.14.289, 4.19.253, 5.4.207, 5.10.110, 5.15.33, 5.16.19, 5.17.2, 5.18 | Patch available | CNA |
- Linux VendorLinux Affected 3.18 and later Fixed in 4.9.324, 4.14.289, 4.19.253, 5.4.207, 5.10.110, 5.15.33, 5.16.19, 5.17.2, 5.18 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 3.18 to before 4.9.324; 4.10 to before 4.14.289; 4.15 to before 4.19.253; 4.20 to before 5.4.207; 5.5 to before 5.10.110; 5.11 to before 5.15.33; 5.16 to before 5.16.19; 5.17 to before 5.17.2 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 3.18 to before 4.9.324; 4.10 to before 4.14.289; 4.15 to before 4.19.253; 4.20 to before 5.4.207; 5.5 to before 5.10.110; 5.11 to before 5.15.33; 5.16 to before 5.16.19; 5.17 to before 5.17.2 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 4.9.324, 4.14.289, 4.19.253, 5.4.207, 5.10.110, 5.15.33, 5.16.19, 5.17.2, 5.18
Red Hat 1 advisory
- RHSA-2023:2458 Released 2023-05-09 · Red Hat rating Importantkernel security, bug fix, and enhancement update
- Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-284.11.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.11.1.el9_2, kernel-64k-devel-5.14.0-284.11.1.el9_2 +10
- Red Hat Enterprise Linux BaseOS (v. 9) bpftool-7.0.0-284.11.1.el9_2, kernel-5.14.0-284.11.1.el9_2, kernel-64k-5.14.0-284.11.1.el9_2 +29
- Red Hat Enterprise Linux CRB (v. 9) kernel-tools-libs-devel-5.14.0-284.11.1.el9_2
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 9 | Affected | No fix yet |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2023:2458 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2023:2458 |
| Red Hat Enterprise Linux CRB (v. 9) | Fixed | RHSA-2023:2458 |
Not affected: 4 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2022-49275
- 2026-10-03 Alias added: GHSA-c6wg-m9gg-2cg8
References
Patch 9
- https://git.kernel.org/stable/c/d93ed9aff64968f4cdad690712eb4f48ae537bde
- https://git.kernel.org/stable/c/d3892a747ab16b1eb6593a19d29f62c3b3f020ac
- https://git.kernel.org/stable/c/7728d937ec403a1ceff9483023252d2cb8777f81
- https://git.kernel.org/stable/c/08d90846e438ac22dc56fc49ec0b0d195831c5ed
- https://git.kernel.org/stable/c/869016a2938ac44f7b2fb7fc22c89edad99eb9b3
- https://git.kernel.org/stable/c/f43e64076ff1b1dcb893fb77ad1204105f710a29
- https://git.kernel.org/stable/c/4db7d6f481990dd179a9ee7126dc7aa31ea4fff3
- https://git.kernel.org/stable/c/31417073493f302d26ab66b3abc098d43227b835
- https://git.kernel.org/stable/c/2e8e79c416aae1de224c0f1860f2e3350fa171f8
More Linux Kernel vulnerabilities
- TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
- TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2022-49275 · CVE Program
- CVE-2022-49275 · NVD
- FIRST EPSS
- GHSA-c6wg-m9gg-2cg8 · GitHub Advisory Database · CC BY 4.0
- CVE-2022-49275 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences