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CVE-2026-72107— dm era: fix out-of-bounds memory access for non-zero start sector

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel 3.15版本存在安全漏洞，该漏洞源于era_map()在应用目标偏移之前计算writeset块，可能导致越界内存访问。

CVSS 8.8 · High EPSS 0.65% · P50

Possible ATT&CK Techniques 1 AI

T1074 · Data Staged

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux eec40579d84873dfb7021eb24c50360f073237c5< fe94a0b14010a3c267ff9a2508afb4f27ff1c5bf affected
eec40579d84873dfb7021eb24c50360f073237c5< e3ffa8e492e5cdee62d916ee3e9244ccce2b73c5 affected
eec40579d84873dfb7021eb24c50360f073237c5< 9946a7176bd8c25ddd6e5f1799c54e572ee6bf0f affected
eec40579d84873dfb7021eb24c50360f073237c5< 7e1822f83c5a1ee7b4a19e98edde8770a10b4c71 affected
eec40579d84873dfb7021eb24c50360f073237c5< db5f9b4601f0012038e5a2628aedec2f47933380 affected
eec40579d84873dfb7021eb24c50360f073237c5< 1fcb5e29dd7a5b85adb9d8b539911741d878e829 affected
eec40579d84873dfb7021eb24c50360f073237c5< bafe3e720cdac38cd7ea4eb7852a8f2dbe1bbfe6 affected
eec40579d84873dfb7021eb24c50360f073237c5< a868196f03c2b19418ae3d2b69e195d668a271e5 affected
… +10 more rows
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I. Basic Information for CVE-2026-72107

Vulnerability Information
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Vulnerability Title
dm era: fix out-of-bounds memory access for non-zero start sector
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: dm era: fix out-of-bounds memory access for non-zero start sector dm-era tracks writes in target-relative blocks, but era_map() calculates the writeset block before applying the target offset. Tables with a non-zero start sector can therefore pass an absolute mapped-device block to metadata_current_marked(). If the absolute block is beyond the current writeset size, writeset_marked() tests past the end of the in-core bitset. KASAN reports this as a vmalloc-out-of-bounds access. Apply the target offset before calculating the era block so writeset lookups use the target-relative block number.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/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 3.15版本存在安全漏洞，该漏洞源于era_map()在应用目标偏移之前计算writeset块，可能导致越界内存访问。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux eec40579d84873dfb7021eb24c50360f073237c5 ~ fe94a0b14010a3c267ff9a2508afb4f27ff1c5bf -
Linux Linux 3.15 -

II. Public POCs for CVE-2026-72107

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III. Intelligence Information for CVE-2026-72107

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Patches & Fixes for CVE-2026-72107 (7)

Same Patch Batch · Linux · 2026-08-15 · 844 CVEs total

CVE-2026-74279 10.0 CRITICAL crypto: cavium/cpt - fix DMA cleanup using wrong loop index
CVE-2026-74280 10.0 CRITICAL crypto: marvell/octeontx - fix DMA cleanup using wrong loop index
CVE-2026-72421 10.0 CRITICAL ipv4: fib: Don't ignore error route in local/main tables.
CVE-2026-74309 10.0 CRITICAL vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
CVE-2026-74475 10.0 CRITICAL vxlan: use neigh_ha_snapshot() in route_shortcircuit()
CVE-2026-72408 10.0 CRITICAL geneve: gate GRO hint in geneve_gro_complete() on gs->gro_hint
CVE-2026-72407 10.0 CRITICAL geneve: validate inner network offset in geneve_gro_complete()
CVE-2026-72493 9.9 CRITICAL net: serialize netif_running() check in enqueue_to_backlog()
CVE-2026-72351 9.8 CRITICAL gue: validate REMCSUM private option length
CVE-2026-72251 9.8 CRITICAL netfilter: nf_nat_sip: reload possible stale data pointer
CVE-2026-72355 9.8 CRITICAL netfs: Fix barriering when walking subrequest list
CVE-2026-72249 9.8 CRITICAL netfilter: flowtable: use dst in this direction when pushing IPIP header
CVE-2026-72248 9.8 CRITICAL netfilter: flowtable: support IPIP tunnel with direct xmit
CVE-2026-74495 9.8 CRITICAL igbvf: Fix leak in TX DMA error cleanup
CVE-2026-72429 9.8 CRITICAL ipv6: ioam: fix type confusion of dst_entry
CVE-2026-72436 9.8 CRITICAL netfilter: ipset: Don't use test_bit() in lockless RCU readers in hash types
CVE-2026-74493 9.8 CRITICAL net/smc: fix socket use-after-free during link group termination
CVE-2026-72317 9.8 CRITICAL SUNRPC: pin upper rpc_clnt across the TLS connect_worker
CVE-2026-72451 9.8 CRITICAL xfrm: Fix xfrm state cache insertion race
CVE-2026-74376 9.8 CRITICAL md/raid10: reset read_slot when reusing r10bio for discard

Showing top 20 of 844 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-72107

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