CVE-2023-53491 (GCVE-0-2023-53491)

Vulnerability from cvelistv5 – Published: 2025-10-01 11:45 – Updated: 2026-01-05 10:20
VLAI?
Title
start_kernel: Add __no_stack_protector function attribute
Summary
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 420594296838fdc9a674470d710cda7d1487f9f4 , < 25e73018b4093e0cfbcec5dc4a4bb86d0b69ed56 (git)
Affected: 420594296838fdc9a674470d710cda7d1487f9f4 , < 514ca14ed5444b911de59ed3381dfd195d99fe4b (git)
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    Linux Linux Affected: 2.6.30
Unaffected: 0 , < 2.6.30 (semver)
Unaffected: 6.4.4 , ≤ 6.4.* (semver)
Unaffected: 6.5 , ≤ * (original_commit_for_fix)
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          "url": "https://git.kernel.org/stable/c/514ca14ed5444b911de59ed3381dfd195d99fe4b"
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    "datePublished": "2025-10-01T11:45:43.101Z",
    "dateReserved": "2025-10-01T11:39:39.403Z",
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