CVE - CVE-2024-53097

CVE-ID
CVE-2024-53097	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: mm: krealloc: Fix MTE false alarm in __do_krealloc This patch addresses an issue introduced by commit 1a83a716ec233 ("mm: krealloc: consider spare memory for __GFP_ZERO") which causes MTE (Memory Tagging Extension) to falsely report a slab-out-of-bounds error. The problem occurs when zeroing out spare memory in __do_krealloc. The original code only considered software-based KASAN and did not account for MTE. It does not reset the KASAN tag before calling memset, leading to a mismatch between the pointer tag and the memory tag, resulting in a false positive. Example of the error: ================================================================== swapper/0: BUG: KASAN: slab-out-of-bounds in __memset+0x84/0x188 swapper/0: Write at addr f4ffff8005f0fdf0 by task swapper/0/1 swapper/0: Pointer tag: [f4], memory tag: [fe] swapper/0: swapper/0: CPU: 4 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.12. swapper/0: Hardware name: MT6991(ENG) (DT) swapper/0: Call trace: swapper/0: dump_backtrace+0xfc/0x17c swapper/0: show_stack+0x18/0x28 swapper/0: dump_stack_lvl+0x40/0xa0 swapper/0: print_report+0x1b8/0x71c swapper/0: kasan_report+0xec/0x14c swapper/0: __do_kernel_fault+0x60/0x29c swapper/0: do_bad_area+0x30/0xdc swapper/0: do_tag_check_fault+0x20/0x34 swapper/0: do_mem_abort+0x58/0x104 swapper/0: el1_abort+0x3c/0x5c swapper/0: el1h_64_sync_handler+0x80/0xcc swapper/0: el1h_64_sync+0x68/0x6c swapper/0: __memset+0x84/0x188 swapper/0: btf_populate_kfunc_set+0x280/0x3d8 swapper/0: __register_btf_kfunc_id_set+0x43c/0x468 swapper/0: register_btf_kfunc_id_set+0x48/0x60 swapper/0: register_nf_nat_bpf+0x1c/0x40 swapper/0: nf_nat_init+0xc0/0x128 swapper/0: do_one_initcall+0x184/0x464 swapper/0: do_initcall_level+0xdc/0x1b0 swapper/0: do_initcalls+0x70/0xc0 swapper/0: do_basic_setup+0x1c/0x28 swapper/0: kernel_init_freeable+0x144/0x1b8 swapper/0: kernel_init+0x20/0x1a8 swapper/0: ret_from_fork+0x10/0x20 ==================================================================
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/3dfb40da84f26dd35dd9bbaf626a2424565b8406 URL:https://git.kernel.org/stable/c/3dfb40da84f26dd35dd9bbaf626a2424565b8406 MISC:https://git.kernel.org/stable/c/486aeb5f1855c75dd810c25036134961bd2a6722 URL:https://git.kernel.org/stable/c/486aeb5f1855c75dd810c25036134961bd2a6722 MISC:https://git.kernel.org/stable/c/704573851b51808b45dae2d62059d1d8189138a2 URL:https://git.kernel.org/stable/c/704573851b51808b45dae2d62059d1d8189138a2 MISC:https://git.kernel.org/stable/c/71548fada7ee0eb50cc6ccda82dff010c745f92c URL:https://git.kernel.org/stable/c/71548fada7ee0eb50cc6ccda82dff010c745f92c MISC:https://git.kernel.org/stable/c/8ebee7565effdeae6085458f8f8463363120a871 URL:https://git.kernel.org/stable/c/8ebee7565effdeae6085458f8f8463363120a871 MISC:https://git.kernel.org/stable/c/d02492863023431c31f85d570f718433c22b9311 URL:https://git.kernel.org/stable/c/d02492863023431c31f85d570f718433c22b9311 MISC:https://git.kernel.org/stable/c/d43f1430d47c22a0727c05b6f156ed25fecdfeb4 URL:https://git.kernel.org/stable/c/d43f1430d47c22a0727c05b6f156ed25fecdfeb4
Assigning CNA
kernel.org
Date Record Created
20241119	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20241119)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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