CVE-2026-74376— md/raid10: reset read_slot when reusing r10bio for discard
Possible ATT&CK Techniques 1AI
T1211 · Exploitation for StealthAffected Version Matrix 16
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | d30588b2731fb01e1616cf16c3fe79a1443e29aa< 3cb2a606ce4902eceabe68338df0653312f861f8 | affected |
d30588b2731fb01e1616cf16c3fe79a1443e29aa< 561c9711e4f545d6464a023168bdee03b00fa945 | affected | ||
d30588b2731fb01e1616cf16c3fe79a1443e29aa< ce3030e92f14362880055de5fe3c258971118853 | affected | ||
d30588b2731fb01e1616cf16c3fe79a1443e29aa< 742e4afd247d9c972695227716b03d432a7e1d26 | affected | ||
d30588b2731fb01e1616cf16c3fe79a1443e29aa< b7313f23ea5a79b199a007bfad64a866cc2c22e7 | affected | ||
d30588b2731fb01e1616cf16c3fe79a1443e29aa< eb04e3e9c14ed15914f5fd2eae8b6435f54f095f | affected | ||
d30588b2731fb01e1616cf16c3fe79a1443e29aa< 6b8a26af065ddc93de2aa5c9f0df98dce9723442 | affected | ||
5.13 | affected | ||
| … +8 more rows | |||
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I. Basic Information for CVE-2026-74376
Vulnerability Information
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Vulnerability Title
md/raid10: reset read_slot when reusing r10bio for discard
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于md/raid10驱动在重用r10bio进行discard操作时未正确重置read_slot，可能导致替换bio未被正确释放，引发资源泄漏。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-74376
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-74376 (7)
Same Patch Batch · Linux · 2026-08-15 · 845 CVEs total
| CVE-2026-72421 | 10.0 CRITICAL | ipv4: fib: Don't ignore error route in local/main tables. |
| CVE-2026-74279 | 10.0 CRITICAL | crypto: cavium/cpt - fix DMA cleanup using wrong loop index |
| CVE-2026-72408 | 10.0 CRITICAL | geneve: gate GRO hint in geneve_gro_complete() on gs->gro_hint |
| CVE-2026-74309 | 10.0 CRITICAL | vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler |
| CVE-2026-72407 | 10.0 CRITICAL | geneve: validate inner network offset in geneve_gro_complete() |
| CVE-2026-74280 | 10.0 CRITICAL | crypto: marvell/octeontx - fix DMA cleanup using wrong loop index |
| CVE-2026-74475 | 10.0 CRITICAL | vxlan: use neigh_ha_snapshot() in route_shortcircuit() |
| CVE-2026-72493 | 9.9 CRITICAL | net: serialize netif_running() check in enqueue_to_backlog() |
| CVE-2026-74361 | 9.8 CRITICAL | nvme: fix FDP fdpcidx bounds check |
| CVE-2026-74268 | 9.8 CRITICAL | tcp: clear sock_ops cb flags before force-closing a child socket |
| CVE-2026-72064 | 9.8 CRITICAL | net: mana: Sync page pool RX frags for CPU |
| CVE-2026-72065 | 9.8 CRITICAL | net: mana: Validate the packet length reported by the NIC |
| CVE-2026-72069 | 9.8 CRITICAL | locking/rt: Fix the incorrect RCU protection in rt_spin_unlock() |
| CVE-2026-72185 | 9.8 CRITICAL | ntfs: fix WARN_ON for resident attribute in ntfs_map_runlist_nolock() |
| CVE-2026-72249 | 9.8 CRITICAL | netfilter: flowtable: use dst in this direction when pushing IPIP header |
| CVE-2026-72494 | 9.8 CRITICAL | RDMA/irdma: Replace waitqueue and flag with completion |
| CVE-2026-72248 | 9.8 CRITICAL | netfilter: flowtable: support IPIP tunnel with direct xmit |
| CVE-2026-72491 | 9.8 CRITICAL | net/9p: fix race condition on rdma->state in trans_rdma.c |
| CVE-2026-72251 | 9.8 CRITICAL | netfilter: nf_nat_sip: reload possible stale data pointer |
| CVE-2026-74480 | 9.8 CRITICAL | net: bridge: stop fast-leave after deleting a port group |
Showing top 20 of 845 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-74579
netfilter: nft_payload: fix mask build for partial field off - CVE-2026-74578
crypto: algif_skcipher - force synchronous processing on tre - CVE-2026-74577
net: mpls: initialize rtm_tos in mpls_getroute() - CVE-2026-74576
mm/slab: prevent unbounded recursion in free path with new k - CVE-2026-74574
dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev
Same vendor: Linux
- CVE-2026-74579
netfilter: nft_payload: fix mask build for partial field off - CVE-2026-74578
crypto: algif_skcipher - force synchronous processing on tre - CVE-2026-74577
net: mpls: initialize rtm_tos in mpls_getroute() - CVE-2026-74576
mm/slab: prevent unbounded recursion in free path with new k - CVE-2026-74574
dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev
V. Comments for CVE-2026-74376
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