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kernel: md: fix a crash in mempool_free

🗓️ 16 May 2023 08:56:17Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 7 Views

Kernel fix: prevent mempool_free crash in md by moving bio_put and rdev_dec_pending before atomic_dec_and_test.

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Tenable Nessus		Amazon Linux 2 : kernel, --advisory ALAS2-2023-1932 (ALAS-2023-1932)
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Tenable Nessus		Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.10-2023-026 (ALASKERNEL-5.10-2023-026)
8 Feb 202300:00
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Tenable Nessus		Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.15-2023-013 (ALASKERNEL-5.15-2023-013)
8 Feb 202300:00
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Tenable Nessus		Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.4-2023-042 (ALASKERNEL-5.4-2023-042)
23 Feb 202300:00
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Tenable Nessus		EulerOS 2.0 SP10 : kernel (EulerOS-SA-2026-1029)
15 Jan 202600:00
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Tenable Nessus		EulerOS Virtualization 2.10.0 : kernel (EulerOS-SA-2026-1172)
31 Jan 202600:00
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Tenable Nessus		EulerOS 2.0 SP13 : kernel (EulerOS-SA-2026-1212)
2 Feb 202600:00
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Tenable Nessus		EulerOS 2.0 SP13 : kernel (EulerOS-SA-2026-1224)
2 Feb 202600:00
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Tenable Nessus		EulerOS Virtualization 2.13.0 : kernel (EulerOS-SA-2026-1629)
18 Mar 202600:00
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Tenable Nessus		EulerOS Virtualization 2.13.1 : kernel (EulerOS-SA-2026-1637)
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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8.8aarch64bpftool4.18.0-477.10.1.el8_8bpftool-4.18.0-477.10.1.el8_8.aarch64.rpm
Red Hat Enterprise Linux8.8ppc64lebpftool4.18.0-477.10.1.el8_8bpftool-4.18.0-477.10.1.el8_8.ppc64le.rpm
Red Hat Enterprise Linux8.8s390xbpftool4.18.0-477.10.1.el8_8bpftool-4.18.0-477.10.1.el8_8.s390x.rpm
Red Hat Enterprise Linux8.8x86_64bpftool4.18.0-477.10.1.el8_8bpftool-4.18.0-477.10.1.el8_8.x86_64.rpm
Red Hat Enterprise Linux8.8aarch64bpftool-debuginfo4.18.0-477.10.1.el8_8bpftool-debuginfo-4.18.0-477.10.1.el8_8.aarch64.rpm
Red Hat Enterprise Linux8.8ppc64lebpftool-debuginfo4.18.0-477.10.1.el8_8bpftool-debuginfo-4.18.0-477.10.1.el8_8.ppc64le.rpm
Red Hat Enterprise Linux8.8s390xbpftool-debuginfo4.18.0-477.10.1.el8_8bpftool-debuginfo-4.18.0-477.10.1.el8_8.s390x.rpm
Red Hat Enterprise Linux8.8x86_64bpftool-debuginfo4.18.0-477.10.1.el8_8bpftool-debuginfo-4.18.0-477.10.1.el8_8.x86_64.rpm
Red Hat Enterprise Linux8.8aarch64kernel4.18.0-477.10.1.el8_8kernel-4.18.0-477.10.1.el8_8.aarch64.rpm
Red Hat Enterprise Linux8.8ppc64lekernel4.18.0-477.10.1.el8_8kernel-4.18.0-477.10.1.el8_8.ppc64le.rpm
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29 Jun 2026 21:07Current
6.6Medium risk
Vulners AI Score6.6
CVSS 3.15.5
EPSS0.0015
SSVC
CWE-367
kernelmempool crashmd end flushbio put orderrdev pending decrementatomic decrement order
7