CVE - CVE-2024-56584

CVE-ID
CVE-2024-56584	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: io_uring/tctx: work around xa_store() allocation error issue syzbot triggered the following WARN_ON: WARNING: CPU: 0 PID: 16 at io_uring/tctx.c:51 __io_uring_free+0xfa/0x140 io_uring/tctx.c:51 which is the WARN_ON_ONCE(!xa_empty(&tctx->xa)); sanity check in __io_uring_free() when a io_uring_task is going through its final put. The syzbot test case includes injecting memory allocation failures, and it very much looks like xa_store() can fail one of its memory allocations and end up with ->head being non-NULL even though no entries exist in the xarray. Until this issue gets sorted out, work around it by attempting to iterate entries in our xarray, and WARN_ON_ONCE() if one is found.
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/42882b583095dcf747da6e3af1daeff40e27033e URL:https://git.kernel.org/stable/c/42882b583095dcf747da6e3af1daeff40e27033e MISC:https://git.kernel.org/stable/c/7eb75ce7527129d7f1fee6951566af409a37a1c4 URL:https://git.kernel.org/stable/c/7eb75ce7527129d7f1fee6951566af409a37a1c4 MISC:https://git.kernel.org/stable/c/94ad56f61b873ffeebcc620d451eacfbdf9d40f0 URL:https://git.kernel.org/stable/c/94ad56f61b873ffeebcc620d451eacfbdf9d40f0 MISC:https://git.kernel.org/stable/c/d5b2ddf1f90c7248eff9630b95895c8950f2f36d URL:https://git.kernel.org/stable/c/d5b2ddf1f90c7248eff9630b95895c8950f2f36d
Assigning CNA
kernel.org
Date Record Created
20241227	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 (20241227)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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