protect the fetch of ->fd[fd] in do_dup2() from mispredictions
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.
CVE-2024-42265
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2024-42265
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "8280d16172243702ed43432f826ca6130edb4086",
"lessThan": "ed42e8ff509d2a61c6642d1825032072dab79f26",
"versionType": "git"
},
{
"status": "affected",
"version": "8280d16172243702ed43432f826ca6130edb4086",
"lessThan": "41a6c31df77bd8e050136b0a200b537da9e1084a",
"versionType": "git"
},
{
"status": "affected",
"version": "8280d16172243702ed43432f826ca6130edb4086",
"lessThan": "08775b3d6ed117cf4518754ec7300ee42b6a5368",
"versionType": "git"
},
{
"status": "affected",
"version": "8280d16172243702ed43432f826ca6130edb4086",
"lessThan": "3f480493550b6a23d3a65d095d6569d4a7f56a0f",
"versionType": "git"
},
{
"status": "affected",
"version": "8280d16172243702ed43432f826ca6130edb4086",
"lessThan": "5db999fff545b924b24c9afd368ef5c17279b176",
"versionType": "git"
},
{
"status": "affected",
"version": "8280d16172243702ed43432f826ca6130edb4086",
"lessThan": "da72e783afd27d9f487836b2e6738146c0edd149",
"versionType": "git"
},
{
"status": "affected",
"version": "8280d16172243702ed43432f826ca6130edb4086",
"lessThan": "1171ceccabfd596ca370c5d2cbb47d110c3f2fe1",
"versionType": "git"
},
{
"status": "affected",
"version": "8280d16172243702ed43432f826ca6130edb4086",
"lessThan": "8aa37bde1a7b645816cda8b80df4753ecf172bf1",
"versionType": "git"
}
],
"programFiles": [
"fs/file.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.7"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.7",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "4.19.320",
"versionType": "semver",
"lessThanOrEqual": "4.19.*"
},
{
"status": "unaffected",
"version": "5.4.282",
"versionType": "semver",
"lessThanOrEqual": "5.4.*"
},
{
"status": "unaffected",
"version": "5.10.224",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.165",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.104",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.45",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.10.4",
"versionType": "semver",
"lessThanOrEqual": "6.10.*"
},
{
"status": "unaffected",
"version": "6.11",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/file.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2024-42265
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #26675 · Revision 1
- Added to Heist Feed
- Publisher date