High severity7.8NVD Advisory· Published Jun 25, 2026· Updated Jul 8, 2026
CVE-2026-53270
CVE-2026-53270
Description
In the Linux kernel, the following vulnerability has been resolved:
ipvs: clear the svc scheduler ptr early on edit
ip_vs_edit_service() while unbinding the old scheduler clears the svc->scheduler ptr after the scheduler module initiates RCU callbacks. This can cause packets to use the old scheduler at the time when svc->sched_data is already freed after RCU grace period.
Fix it by clearing the ptr early in ip_vs_unbind_scheduler(), before the done_service method schedules any RCU callbacks.
Also, if the new scheduler fails to initialize when replacing the old scheduler, try to restore the old scheduler while still returning the error code.
Affected products
20cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 12 more
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=3.18.23,<3.19
- cpe:2.3:o:linux:linux_kernel:4.2:-:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:4.2:rc5:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:4.2:rc6:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:4.2:rc7:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:4.2:rc8:*:*:*:*:*:*
- 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:*:*:*:*:*:*
- (no CPE)
- osv-coords7 versionspkg:apk/chainguard/linux-azure-6.18pkg:apk/chainguard/linux-gcp-6.18pkg:apk/chainguard/linux-gcp-6.18-bootc-boot-installedpkg:apk/chainguard/linux-qemu-6.18pkg:apk/chainguard/linux-qemu-6.18-bootc-boot-installedpkg:apk/chainguard/linux-qemu-melangepkg:linux/kernel
< 6.18.38-r0+ 6 more
- (no CPE)range: < 6.18.38-r0
- (no CPE)range: < 6.18.38-r0
- (no CPE)range: < 6.18.38-r0
- (no CPE)range: < 6.18.38-r0
- (no CPE)range: < 6.18.38-r0
- (no CPE)range: < 6.18.38-r0
- (no CPE)range: >= 4.2.0, < 5.10.259
Patches
Vulnerability mechanics
References
8- git.kernel.org/stable/c/14e4689c113b4c06af1069364ade24fdd7055f33nvdPatch
- git.kernel.org/stable/c/193989cc6d80dd8e0460fb3992e69fa03bf0ff9bnvdPatch
- git.kernel.org/stable/c/19a9493faa4bf3c7bd0a386f30b60b1bb4a3da03nvdPatch
- git.kernel.org/stable/c/25918720ba97f974a4f8d433b5a0132c5b43f6f3nvdPatch
- git.kernel.org/stable/c/7d4f5004511757e3984901ffb412fcf858d80ed5nvdPatch
- git.kernel.org/stable/c/c6376b9b1b4d2bad638256b1b3588e073344ae69nvdPatch
- git.kernel.org/stable/c/d10730a1f2caf08088e0db1b19b242f3e6fa5f06nvdPatch
- git.kernel.org/stable/c/e4feec3174036ba772006be74beee0efa09a9eb8nvdPatch
News mentions
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