CVE - CVE-2024-42265

CVE-ID
CVE-2024-42265	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: protect the fetch of ->fd[fd] in do_dup2() from mispredictions both callers have verified that fd is not greater than ->max_fds; however, misprediction might end up with tofree = fdt->fd[fd]; being speculatively executed. That's wrong for the same reasons why it's wrong in close_fd()/file_close_fd_locked(); the same solution applies - array_index_nospec(fd, fdt->max_fds) could differ from fd only in case of speculative execution on mispredicted path.
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/08775b3d6ed117cf4518754ec7300ee42b6a5368 URL:https://git.kernel.org/stable/c/08775b3d6ed117cf4518754ec7300ee42b6a5368 MISC:https://git.kernel.org/stable/c/1171ceccabfd596ca370c5d2cbb47d110c3f2fe1 URL:https://git.kernel.org/stable/c/1171ceccabfd596ca370c5d2cbb47d110c3f2fe1 MISC:https://git.kernel.org/stable/c/3f480493550b6a23d3a65d095d6569d4a7f56a0f URL:https://git.kernel.org/stable/c/3f480493550b6a23d3a65d095d6569d4a7f56a0f MISC:https://git.kernel.org/stable/c/41a6c31df77bd8e050136b0a200b537da9e1084a URL:https://git.kernel.org/stable/c/41a6c31df77bd8e050136b0a200b537da9e1084a MISC:https://git.kernel.org/stable/c/5db999fff545b924b24c9afd368ef5c17279b176 URL:https://git.kernel.org/stable/c/5db999fff545b924b24c9afd368ef5c17279b176 MISC:https://git.kernel.org/stable/c/8aa37bde1a7b645816cda8b80df4753ecf172bf1 URL:https://git.kernel.org/stable/c/8aa37bde1a7b645816cda8b80df4753ecf172bf1 MISC:https://git.kernel.org/stable/c/da72e783afd27d9f487836b2e6738146c0edd149 URL:https://git.kernel.org/stable/c/da72e783afd27d9f487836b2e6738146c0edd149 MISC:https://git.kernel.org/stable/c/ed42e8ff509d2a61c6642d1825032072dab79f26 URL:https://git.kernel.org/stable/c/ed42e8ff509d2a61c6642d1825032072dab79f26
Assigning CNA
kernel.org
Date Record Created
20240730	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 (20240730)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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