CVE-2026-74376

Summary

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

md/raid10: reset read_slot when reusing r10bio for discard

put_all_bios() always drops devs[i].bio, but it only drops devs[i].repl_bio when r10_bio->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 bio_put() on repl_bio.

Reset read_slot to -1 when preparing an r10bio for discard so the replacement bio is always released correctly.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxd30588b2731fb01e1616cf16c3fe79a1443e29aa < 3cb2a606ce4902eceabe68338df0653312f861f8affected
LinuxLinuxd30588b2731fb01e1616cf16c3fe79a1443e29aa < 561c9711e4f545d6464a023168bdee03b00fa945affected
LinuxLinuxd30588b2731fb01e1616cf16c3fe79a1443e29aa < ce3030e92f14362880055de5fe3c258971118853affected
LinuxLinuxd30588b2731fb01e1616cf16c3fe79a1443e29aa < 742e4afd247d9c972695227716b03d432a7e1d26affected
LinuxLinuxd30588b2731fb01e1616cf16c3fe79a1443e29aa < b7313f23ea5a79b199a007bfad64a866cc2c22e7affected
LinuxLinuxd30588b2731fb01e1616cf16c3fe79a1443e29aa < eb04e3e9c14ed15914f5fd2eae8b6435f54f095faffected
LinuxLinuxd30588b2731fb01e1616cf16c3fe79a1443e29aa < 6b8a26af065ddc93de2aa5c9f0df98dce9723442affected
LinuxLinux5.13affected
LinuxLinux0 < 5.13unaffected
LinuxLinux5.15.212 <= 5.15.*unaffected
LinuxLinux6.1.178 <= 6.1.*unaffected
LinuxLinux6.6.145 <= 6.6.*unaffected
LinuxLinux6.12.97 <= 6.12.*unaffected
LinuxLinux6.18.40 <= 6.18.*unaffected
LinuxLinux7.1.5 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References