CVE-2023-53491
- Source
- https://cve.org/CVERecord?id=CVE-2023-53491
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-53491.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2023-53491
- Downstream
- Related
- Published
- 2025-10-01T11:45:43Z
- Modified
- 2026-08-12T03:30:53Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- start_kernel: Add __no_stack_protector function attribute
- Details
-
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.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53491.json" }- References
-
- https://git.kernel.org/stable/c/25e73018b4093e0cfbcec5dc4a4bb86d0b69ed56
- https://git.kernel.org/stable/c/514ca14ed5444b911de59ed3381dfd195d99fe4b
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53491.json
- https://nvd.nist.gov/vuln/detail/CVE-2023-53491
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git