High severity7.8NVD Advisory· Published Jun 25, 2026· Updated Jul 15, 2026
CVE-2026-53185
CVE-2026-53185
Description
In the Linux kernel, the following vulnerability has been resolved:
zram: fix use-after-free in zram_bvec_write_partial()
zram_read_page() picks the sync or async backing device read path based on whether the parent bio is NULL. zram_bvec_write_partial() passes its parent bio down, so for ZRAM_WB slots the read is dispatched asynchronously and zram_read_page() returns 0 while the bio is still in flight. The caller then runs memcpy_from_bvec(), zram_write_page() and __free_page() on the buffer, leaving the async read to write into a freed page.
zram_bvec_read_partial() was switched to NULL in commit 4e3c87b9421d ("zram: fix synchronous reads") for the same reason; the write_partial counterpart was missed.
Affected products
22cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 8 more
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=4.14,<6.6.143
- cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.1:rc5:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.1:rc6:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.1:rc7:*:*:*:*:*:*
- (no CPE)
- osv-coords13 versionspkg:apk/chainguard/linux-aws-6.12pkg:apk/chainguard/linux-aws-6.18pkg:apk/chainguard/linux-azure-6.18pkg:apk/chainguard/linux-gcp-6.12pkg:apk/chainguard/linux-gcp-6.18pkg:apk/chainguard/linux-gcp-6.18-bootc-boot-installedpkg:apk/chainguard/linux-qemu-6.12pkg:apk/chainguard/linux-qemu-6.18pkg:apk/chainguard/linux-qemu-6.18-bootc-boot-installedpkg:apk/chainguard/linux-qemu-melangepkg:apk/chainguard/linux-vmware-6.12pkg:apk/chainguard/linux-vmware-6.18pkg:linux/kernel
< 6.12.95-r0+ 12 more
- (no CPE)range: < 6.12.95-r0
- (no CPE)range: < 6.18.38-r0
- (no CPE)range: < 6.18.38-r0
- (no CPE)range: < 6.12.95-r0
- (no CPE)range: < 6.18.38-r0
- (no CPE)range: < 6.18.38-r0
- (no CPE)range: < 6.12.95-r0
- (no CPE)range: < 6.18.38-r0
- (no CPE)range: < 6.18.38-r0
- (no CPE)range: < 6.18.38-r0
- (no CPE)range: < 6.12.95-r0
- (no CPE)range: < 6.18.38-r0
- (no CPE)range: >= 4.14.0, < 6.6.143
Patches
Vulnerability mechanics
References
8- git.kernel.org/stable/c/0c2821665ff71be3f4b07ecece384669f2877f6anvdPatch
- git.kernel.org/stable/c/198b5a14cca27263b9c14b20114c8092de15dfcbnvdPatch
- git.kernel.org/stable/c/732fd9f0b9c1cdc6dfd77162ded60df005182cc0nvdPatch
- git.kernel.org/stable/c/77a602b505ce4802915853cfc435a4722fab3e64nvdPatch
- git.kernel.org/stable/c/c96786d6ff1acc1d54d9241e97767554c1dfdd5bnvdPatch
- access.redhat.com/security/cve/CVE-2026-53185nvdThird Party Advisory
- bugzilla.redhat.com/show_bug.cginvdIssue TrackingThird Party Advisory
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53185.jsonnvdThird Party Advisory
News mentions
0No linked articles in our index yet.