CVE-2026-74542
N/A ALL-YEARSIn the Linux kernel, the following vulnerability has been resolved: netfs: Fix folio_queue ENOMEM in writeback by adding a mempool Fix the handling of folio_queue allocation failure in writeback by adding a mempool and passing in gfp_t flags to the rolling buffer functions that allocate memory, using the mempool if gfp != GFP_KERNEL. This is then extended upwards and the gfp to be used for a request is stored in the netfs_io_request struct and is then used for both requests and subrequests, eliminating the sleeping loops there. The failure caused: folio != NULL WARNING: fs/netfs/write_issue.c:603 at netfs_writepages+0x883/0xa10 fs/netfs/write_issue.c:603, CPU#3: syz.0.17/5919
No known exploitation, public exploit, or elevated probability at this time. Track for changes.
Exploitation likelihood
0.2%chance of exploitation in 30 days · 11th percentile
Impact if exploited
—CVSS · not scored
- No impact metrics
Proof of concept
No public PoC is currently catalogued.
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References and research data (JSON)
Vendor product assessments
Showing 32 of 274 vendor product statements; 242 omitted. Read the full vendor advisory.
kernel as a component of Red Hat Enterprise Linux 10 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/kernel
- none available: Fix deferred
kernel-64k-debug-devel as a component of Red Hat Enterprise Linux 10 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/kernel-64k-debug-devel
- none available: Fix deferred
kernel-64k-devel as a component of Red Hat Enterprise Linux 10 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/kernel-64k-devel
- none available: Fix deferred
kernel-abi-stablelists as a component of Red Hat Enterprise Linux 10 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/kernel-abi-stablelists
- none available: Fix deferred
kernel-debug-devel-matched as a component of Red Hat Enterprise Linux 10 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/kernel-debug-devel-matched
- none available: Fix deferred
kernel-devel as a component of Red Hat Enterprise Linux 10 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/kernel-devel
- none available: Fix deferred
kernel-modules-extra as a component of Red Hat Enterprise Linux 10 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/kernel-modules-extra
- none available: Fix deferred
kernel-rt-64k-debug as a component of Red Hat Enterprise Linux 10 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/kernel-rt-64k-debug
- none available: Fix deferred
kernel-rt-64k-debug-modules-extra as a component of Red Hat Enterprise Linux 10 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/kernel-rt-64k-debug-modules-extra
- none available: Fix deferred
kernel-rt-core as a component of Red Hat Enterprise Linux 10 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/kernel-rt-core
- none available: Fix deferred
kernel-rt-debug-modules as a component of Red Hat Enterprise Linux 10 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/kernel-rt-debug-modules
- none available: Fix deferred
kernel-rt-modules as a component of Red Hat Enterprise Linux 10 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/kernel-rt-modules
- none available: Fix deferred
kernel-tools-libs-devel as a component of Red Hat Enterprise Linux 10 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/kernel-tools-libs-devel
- none available: Fix deferred
kernel-zfcpdump-devel as a component of Red Hat Enterprise Linux 10 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/kernel-zfcpdump-devel
- none available: Fix deferred
kernel.src as a component of Red Hat Enterprise Linux 10 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/kernel?arch=src
- none available: Fix deferred
rv as a component of Red Hat Enterprise Linux 10 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/rv
- none available: Fix deferred
kernel as a component of Red Hat Enterprise Linux 6 · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:rpm/redhat/kernel
Red Hat · CVE-2026-74542 · Updated 2026-09-01T10:37:41+00:00python-perf as a component of Red Hat Enterprise Linux 6 · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:rpm/redhat/python-perf
Red Hat · CVE-2026-74542 · Updated 2026-09-01T10:37:41+00:00kernel-rt-debug as a component of Red Hat Enterprise Linux 7 · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:rpm/redhat/kernel-rt-debug
Red Hat · CVE-2026-74542 · Updated 2026-09-01T10:37:41+00:00kernel.src as a component of Red Hat Enterprise Linux 7 · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:rpm/redhat/kernel?arch=src
Red Hat · CVE-2026-74542 · Updated 2026-09-01T10:37:41+00:00kernel-debug-modules-internal as a component of Red Hat Enterprise Linux 8 · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:rpm/redhat/kernel-debug-modules-internal
Red Hat · CVE-2026-74542 · Updated 2026-09-01T10:37:41+00:00kernel-rt-debug-kvm as a component of Red Hat Enterprise Linux 8 · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:rpm/redhat/kernel-rt-debug-kvm
Red Hat · CVE-2026-74542 · Updated 2026-09-01T10:37:41+00:00kernel-tools-libs as a component of Red Hat Enterprise Linux 8 · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:rpm/redhat/kernel-tools-libs
Red Hat · CVE-2026-74542 · Updated 2026-09-01T10:37:41+00:00kernel-64k as a component of Red Hat Enterprise Linux 9 · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:rpm/redhat/kernel-64k
Red Hat · CVE-2026-74542 · Updated 2026-09-01T10:37:41+00:00kernel-64k-modules as a component of Red Hat Enterprise Linux 9 · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:rpm/redhat/kernel-64k-modules
Red Hat · CVE-2026-74542 · Updated 2026-09-01T10:37:41+00:00kernel-debug-modules-core as a component of Red Hat Enterprise Linux 9 · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:rpm/redhat/kernel-debug-modules-core
Red Hat · CVE-2026-74542 · Updated 2026-09-01T10:37:41+00:00kernel-modules-extra as a component of Red Hat Enterprise Linux 9 · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:rpm/redhat/kernel-modules-extra
Red Hat · CVE-2026-74542 · Updated 2026-09-01T10:37:41+00:00kernel-rt-64k-debug-modules-extra as a component of Red Hat Enterprise Linux 9 · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:rpm/redhat/kernel-rt-64k-debug-modules-extra
Red Hat · CVE-2026-74542 · Updated 2026-09-01T10:37:41+00:00kernel-rt-debug-devel as a component of Red Hat Enterprise Linux 9 · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:rpm/redhat/kernel-rt-debug-devel
Red Hat · CVE-2026-74542 · Updated 2026-09-01T10:37:41+00:00kernel-rt-modules-extra as a component of Red Hat Enterprise Linux 9 · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:rpm/redhat/kernel-rt-modules-extra
Red Hat · CVE-2026-74542 · Updated 2026-09-01T10:37:41+00:00kernel-zfcpdump-devel as a component of Red Hat Enterprise Linux 9 · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:rpm/redhat/kernel-zfcpdump-devel
Red Hat · CVE-2026-74542 · Updated 2026-09-01T10:37:41+00:00rv as a component of Red Hat Enterprise Linux 9 · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:rpm/redhat/rv
Red Hat · CVE-2026-74542 · Updated 2026-09-01T10:37:41+00:00
References
Advisories
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-74542.json Red Hat · CVE-2026-74542 · Updated 2026-09-01T10:37:41+00:00
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-59735 EUVD · EUVD-2026-59735
Technical & other
- https://git.kernel.org/stable/c/b343252d6f536203dd0660f676190dcbf6d2ecdcCVE record · Linux · Updated 2026-10-21T12:45:52.776Z
NVD · CVE-2026-74542 · Updated 2026-10-21T13:19:46.490 - https://git.kernel.org/stable/c/15ed8a9b7c63e9171f5139a6aaa1ffb61809861fCVE record · Linux · Updated 2026-10-21T12:45:52.776Z
NVD · CVE-2026-74542 · Updated 2026-10-21T13:19:46.490 - https://git.kernel.org/stable/c/3f6d7f8a5416d852648d15a05e895f1195ee8a85CVE record · Linux · Updated 2026-10-21T12:45:52.776Z
NVD · CVE-2026-74542 · Updated 2026-10-21T13:19:46.490 - https://git.kernel.org/stable/c/1d78d56c43ef3768183e8370e7367b162700e049CVE record · Linux · Updated 2026-10-21T12:45:52.776Z
NVD · CVE-2026-74542 · Updated 2026-10-21T13:19:46.490 - https://access.redhat.com/security/cve/CVE-2026-74542 Red Hat · CVE-2026-74542 · Updated 2026-09-01T10:37:41+00:00
- https://bugzilla.redhat.com/show_bug.cgi?id=2517042 Red Hat · CVE-2026-74542 · Updated 2026-09-01T10:37:41+00:00
- https://www.cve.org/CVERecord?id=CVE-2026-74542 Red Hat · CVE-2026-74542 · Updated 2026-09-01T10:37:41+00:00
- https://nvd.nist.gov/vuln/detail/CVE-2026-74542 Red Hat · CVE-2026-74542 · Updated 2026-09-01T10:37:41+00:00
- https://lore.kernel.org/linux-cve-announce/2026081548-CVE-2026-74542-883e@gregkh/T Red Hat · CVE-2026-74542 · Updated 2026-09-01T10:37:41+00:00
Sources: NVD · CVE.org · All sources and attribution · EPSS