mailbox: add sanity check for channel array
Priority LOW 24Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 4 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.
Summary
In the Linux kernel, the following vulnerability has been resolved: mailbox: add sanity check for channel array Fail gracefully if there is no channel array attached to the mailbox controller. Otherwise the later dereference will cause an OOPS which might not be seen because mailbox controllers might instantiate very early. Remove the comment explaining the obvious while here.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00134 2nd percentileScored 2026-11-07
Fix Partial Linux (Linux): 5.10.258, 5.15.209, 6.1.175 +5Red Hat: 4 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
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 | 5.10.258, 5.15.209, 6.1.175, 6.6.141, 6.12.91, 6.18.33, 7.0.10, 7.1 | Patch available | CNA |
- Linux VendorLinux Affected 3.18 and later Fixed in 5.10.258, 5.15.209, 6.1.175, 6.6.141, 6.12.91, 6.18.33, 7.0.10, 7.1 Patch available CNA
CPE configurations NVD · 9
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 3.18.1 to before 5.10.258; 5.11 to before 5.15.209; 5.16 to before 6.1.175; 6.2 to before 6.6.141; 6.7 to before 6.12.91; 6.13 to before 6.18.33; 6.19 to before 7.0.10 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:3.18:-:*:*:*:*:*:* | 3.18 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:3.18:rc2:*:*:*:*:*:* | 3.18 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:3.18:rc3:*:*:*:*:*:* | 3.18 rc3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:3.18:rc4:*:*:*:*:*:* | 3.18 rc4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:3.18:rc5:*:*:*:*:*:* | 3.18 rc5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:3.18:rc6:*:*:*:*:*:* | 3.18 rc6 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:3.18:rc7:*:*:*:*:*:* | 3.18 rc7 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* | 7.1 rc1 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 3.18.1 to before 5.10.258; 5.11 to before 5.15.209; 5.16 to before 6.1.175; 6.2 to before 6.6.141; 6.7 to before 6.12.91; 6.13 to before 6.18.33; 6.19 to before 7.0.10 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:3.18:-:*:*:*:*:*:* Versions 3.18 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:3.18:rc2:*:*:*:*:*:* Versions 3.18 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:3.18:rc3:*:*:*:*:*:* Versions 3.18 rc3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:3.18:rc4:*:*:*:*:*:* Versions 3.18 rc4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:3.18:rc5:*:*:*:*:*:* Versions 3.18 rc5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:3.18:rc6:*:*:*:*:*:* Versions 3.18 rc6 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:3.18:rc7:*:*:*:*:*:* Versions 3.18 rc7 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* Versions 7.1 rc1 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.258, 5.15.209, 6.1.175, 6.6.141, 6.12.91, 6.18.33, 7.0.10, 7.1
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 7 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
Not affected: 1 product
- Red Hat Enterprise Linux 6
Timeline
- 2026-10-02 Threatist record created from CVE-2026-53295
- 2026-10-03 Alias added: GHSA-rf57-3w24-v5g9
- 2026-11-06 CISA SSVC decision points changed
References
Patch 8
- https://git.kernel.org/stable/c/5cc3300fab262b26c28bc2fc06df693410c3840b
- https://git.kernel.org/stable/c/0f11444271110d9b5bc6316a153c6431abda899c
- https://git.kernel.org/stable/c/d44872a569b8fbacde457ff2587a775e5004bb79
- https://git.kernel.org/stable/c/14aed0d4e58389cc6a88acf8610b12d3e476272b
- https://git.kernel.org/stable/c/6362c4a7d7e21e68cd9aa04df7cde16befba3a4b
- https://git.kernel.org/stable/c/9dd7489943324298bb0f385495795a82f1dd6507
- https://git.kernel.org/stable/c/37792091ab28ba030fd8d61184c47d4d51294170
- https://git.kernel.org/stable/c/c1aad75595fb67edc7fda8af249d3b886efa1be9
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-2026-53295 · CVE Program
- CVE-2026-53295 · NVD
- FIRST EPSS
- GHSA-rf57-3w24-v5g9 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-53295 · Red Hat security data · CC BY 4.0
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