Bugzilla – Bug 1212836
VUL-0: CVE-2023-1295: kernel-source,kernel-source-rt,kernel-source-azure: TOCTOU vulnerability in io_uring in IORING_OP_CLOSE operation
Last modified: 2023-07-03 07:37:11 UTC
CVE-2023-1295 A time-of-check to time-of-use issue exists in io_uring subsystem's IORING_OP_CLOSE operation in the Linux kernel's versions 5.6 - 5.11 (inclusive), which allows a local user to elevate their privileges to root. Introduced in b5dba59e0cf7e2cc4d3b3b1ac5fe81ddf21959eb, patched in 9eac1904d3364254d622bf2c771c4f85cd435fc2, backported to stable in 788d0824269bef539fe31a785b1517882eafed93. References: http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-1295 https://bugzilla.redhat.com/show_bug.cgi?id=2218350 https://www.cve.org/CVERecord?id=CVE-2023-1295 https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=788d0824269bef539fe31a785b1517882eafed93 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9eac1904d3364254d622bf2c771c4f85cd435fc2 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b5dba59e0cf7e2cc4d3b3b1ac5fe81ddf21959eb https://kernel.dance/788d0824269bef539fe31a785b1517882eafed93 https://kernel.dance/9eac1904d3364254d622bf2c771c4f85cd435fc2
Both commit introducing the bug and fixing commit are on stable and SLE15-SP4 branches only. Nothing to do except adding the CVE to the changelog
was not backported to older kernels before 5.6, and is not in 5.14 based kernels. so no SLES affected.