CVE-2023-53491start_kernel: Add __no_stack_protector function attribute
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: start_kernel: Add __no_stack_protector function attribute Back during the discussion of commit a9a3ed1eff36 ("x86: Fix early boot crash on gcc-10, third try") we discussed the need for a function attribute to control the omission of stack protectors on a per-function basis; at the time Clang had support for no_stack_protector but GCC did not. This was fixed in gcc-11. Now that the function attribute is available, let's start using it. Callers of boot_init_stack_canary need to use this function attribute unless they're compiled with -fno-stack-protector, otherwise the canary stored in the stack slot of the caller will differ upon the call to boot_init_stack_canary. This will lead to a call to __stack_chk_fail() then panic.
- CVSS
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 15, 2026
Affected products
Linux Linux linux:linux (from the name) | 420594296838fdc9a674470d710cda7d1487f9f4 builds before 5a7e8f89cdee16db705905a5b1ce2100b13dd63e; 420594296838fdc9a674470d710cda7d1487f9f4 builds before 25e73018b4093e0cfbcec5dc4a4bb86d0b69ed56; 420594296838fdc9a674470d710cda7d1487f9f4 builds before 514ca14ed5444b911de59ed3381dfd195d99fe4b | CNA record |
linux linux_kernel linux:linux_kernel | from 2.6.30 before 6.4.4 | NVD |
References
- https://git.kernel.org/stable/c/5a7e8f89cdee16db705905a5b1ce2100b13dd63e
- https://git.kernel.org/stable/c/25e73018b4093e0cfbcec5dc4a4bb86d0b69ed56patch
- https://git.kernel.org/stable/c/514ca14ed5444b911de59ed3381dfd195d99fe4bpatch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.