Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-74545— rtase: fix double free of multi-frag skb on DMA map failure

CVSS 9.8 · Critical EPSS 0.46% · P38

Possible ATT&CK Techniques 1AI

T1564.008 · Email Hiding Rules

Affected Version Matrix 10

VendorProductVersion RangeStatus
LinuxLinuxd6e882b89fdf80be0ab4f914ec10f75215e49495< 4f09172aff5f73a5e914f4fbc0d00a1c2ea9f7cbaffected
d6e882b89fdf80be0ab4f914ec10f75215e49495< db986098f30881fafcc752800aa3b13fd289c922affected
d6e882b89fdf80be0ab4f914ec10f75215e49495< de691dc3227b061c4d0beba9f0128fe1ff33dd68affected
d6e882b89fdf80be0ab4f914ec10f75215e49495< 6fb7b769d6ed6d1d2e02af4a80e57a2477f35086affected
6.12affected
< 6.12unaffected
6.12.103≤ 6.12.*unaffected
6.18.44≤ 6.18.*unaffected
… +2 more rows
Get alerts for future matching vulnerabilitiesLog in to subscribe

I. Basic Information for CVE-2026-74545

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
rtase: fix double free of multi-frag skb on DMA map failure
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: rtase: fix double free of multi-frag skb on DMA map failure In rtase_start_xmit(), when the head buffer DMA mapping fails after rtase_xmit_frags() has mapped all fragments, the error path clears the fragment descriptors with rtase_tx_clear_range(), which frees the skb through the last-frag slot and accounts tx_dropped. Control then falls through to the common error label, which frees the same skb a second time and counts it again. Return right after clearing the fragments when the skb owns frags; the no-frag case still drops through and frees the head skb once.
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 6.12版本存在安全漏洞，该漏洞源于rtase_start_xmit()函数在DMA映射失败时错误地释放同一skb两次，可能导致双重释放。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux d6e882b89fdf80be0ab4f914ec10f75215e49495 ~ 4f09172aff5f73a5e914f4fbc0d00a1c2ea9f7cb -
LinuxLinux 6.12 -

II. Public POCs for CVE-2026-74545

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-74545

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-74545 (3)

Same Patch Batch · Linux · 2026-08-15 · 845 CVEs total

CVE-2026-7428010.0 CRITICALcrypto: marvell/octeontx - fix DMA cleanup using wrong loop index
CVE-2026-7447510.0 CRITICALvxlan: use neigh_ha_snapshot() in route_shortcircuit()
CVE-2026-7240710.0 CRITICALgeneve: validate inner network offset in geneve_gro_complete()
CVE-2026-7240810.0 CRITICALgeneve: gate GRO hint in geneve_gro_complete() on gs->gro_hint
CVE-2026-7430910.0 CRITICALvdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
CVE-2026-7242110.0 CRITICALipv4: fib: Don't ignore error route in local/main tables.
CVE-2026-7427910.0 CRITICALcrypto: cavium/cpt - fix DMA cleanup using wrong loop index
CVE-2026-724939.9 CRITICALnet: serialize netif_running() check in enqueue_to_backlog()
CVE-2026-722349.8 CRITICALbatman-adv: access unicast_ttvn skb->data only after skb realloc
CVE-2026-722489.8 CRITICALnetfilter: flowtable: support IPIP tunnel with direct xmit
CVE-2026-724949.8 CRITICALRDMA/irdma: Replace waitqueue and flag with completion
CVE-2026-720989.8 CRITICALdm-verity: fix buffer overflow in FEC calculation
CVE-2026-743459.8 CRITICALRDMA/siw: Fix endpoint/socket association handling
CVE-2026-720839.8 CRITICALscsi: target: core: Fix iSCSI ISID use-after-free in REGISTER AND MOVE
CVE-2026-722269.8 CRITICALbatman-adv: tt: prevent TVLV OOB check overflow
CVE-2026-722229.8 CRITICALsunrpc: pin svc_xprt across the asynchronous TLS handshake callback
CVE-2026-744289.8 CRITICALrxrpc: Fix double unlock in rxrpc_recvmsg()
CVE-2026-722219.8 CRITICALsunrpc: wait for in-flight TLS handshake callback when cancel loses race
CVE-2026-720849.8 CRITICALscsi: target: Bound PR-OUT TransportID parsing to the received buffer
CVE-2026-742559.8 CRITICALtipc: fix UAF in tipc_l2_send_msg()

Showing top 20 of 845 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-74545

No comments yet

Leave a comment