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CVE

CVE-2026-74376

md/raid10: reset read_slot when reusing r10bio for discard
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CVE

CVE-2026-74376

md/raid10: reset read_slot when reusing r10bio for discard

In the Linux kernel, the following vulnerability has been resolved:

md/raid10: reset read_slot when reusing r10bio for discard

putallbios() always drops devs[i].bio, but it only drops

devs[i].replbio when r10bio->read_slot < 0. If discard reuses an

r10bio that was previously used for a read, read_slot can still be

non-negative, and discard cleanup can skip bioput() on replbio.

Reset read_slot to -1 when preparing an r10bio for discard so the

replacement bio is always released correctly.

Package Versions Affected

Package Version
patch Availability
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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.8
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
-

Related Resources

No items found.

References

https://git.kernel.org/stable/c/3cb2a606ce4902eceabe68338df0653312f861f8, https://git.kernel.org/stable/c/561c9711e4f545d6464a023168bdee03b00fa945, https://git.kernel.org/stable/c/6b8a26af065ddc93de2aa5c9f0df98dce9723442, https://git.kernel.org/stable/c/742e4afd247d9c972695227716b03d432a7e1d26, https://git.kernel.org/stable/c/b7313f23ea5a79b199a007bfad64a866cc2c22e7, https://git.kernel.org/stable/c/ce3030e92f14362880055de5fe3c258971118853, https://git.kernel.org/stable/c/eb04e3e9c14ed15914f5fd2eae8b6435f54f095f, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74376.json, https://nvd.nist.gov/vuln/detail/CVE-2026-74376, https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Severity

9.8

CVSS Score
0
10

Basic Information

Base CVSS
9.8
EPSS Probability
0.00502%
EPSS Percentile
0.40792%
Introduced Version
d30588b2731fb01e1616cf16c3fe79a1443e29aa,5.13.0,5.16.0,6.2.0,6.7.0,6.13.0,6.19.0,0
Fix Available
6b8a26af065ddc93de2aa5c9f0df98dce9723442,5.15.212,6.1.178,6.6.145,6.12.97,6.18.40,7.1.5,6.1.180-1,6.12.100-1,0:5.15.213-150.251.amzn2,0:1.0-0.amzn2

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