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CVE-2026-64008— accel/rocket: fix UAF via dangling GEM handle in create_bo

CVSS 7.8 · High EPSS 0.13% · P3

Affected Version Matrix 8

VendorProductVersion RangeStatus
LinuxLinux658ebeac33517bd3169d4b65ed801e9065d0211a< 18abd88d19ea195e2e1547fca0970c2f91d77a42affected
658ebeac33517bd3169d4b65ed801e9065d0211a< 451f1ccbbdb7b65021646704b15902655f8d228aaffected
658ebeac33517bd3169d4b65ed801e9065d0211a< f706e6a4ce75585af979aec3dcbdce68bc76306baffected
6.18affected
< 6.18unaffected
6.18.35≤ 6.18.*unaffected
7.0.12≤ 7.0.*unaffected
7.1≤ *unaffected
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I. Basic Information for CVE-2026-64008

Vulnerability Information
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Vulnerability Title
accel/rocket: fix UAF via dangling GEM handle in create_bo
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: accel/rocket: fix UAF via dangling GEM handle in create_bo rocket_ioctl_create_bo() inserts a GEM handle into the file's IDR via drm_gem_handle_create() early on, then performs several operations that can fail (sgt allocation, drm_mm insert, iommu_map). If any fail after the handle is live, the error path calls drm_gem_shmem_object_free() which kfree's the object without removing the handle from the IDR. This leaves a dangling handle pointing to freed slab memory. Any subsequent ioctl using that handle (PREP_BO, FINI_BO, SUBMIT) calls drm_gem_object_lookup() and dereferences freed memory (UAF). Fix by moving drm_gem_handle_create() to after all fallible operations succeed, matching the pattern used by panfrost, lima, and etnaviv. Also fix drm_mm_insert_node_generic() whose return value was silently overwritten by iommu_map_sgtable() on the next line. Add the missing error check. [tomeu: Move handle creation to the very end]
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会开源的一款操作系统内核。 Linux kernel 6.18版本存在释放后重用漏洞，该漏洞源于rocket_ioctl_create_bo()中GEM句柄处理不当，可能导致释放后重用。
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 658ebeac33517bd3169d4b65ed801e9065d0211a ~ 18abd88d19ea195e2e1547fca0970c2f91d77a42 -
LinuxLinux 6.18 -

II. Public POCs for CVE-2026-64008

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III. Intelligence Information for CVE-2026-64008

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Patches & Fixes for CVE-2026-64008 (2)

Same Patch Batch · Linux · 2026-07-19 · 431 CVEs total

CVE-2026-6379510.0 CRITICAL9p: avoid putting oldfid in p9_client_walk() error path
CVE-2026-639849.8 CRITICALipv6: rpl: fix hdrlen overflow in ipv6_rpl_srh_decompress()
CVE-2026-640009.8 CRITICALnet: hsr: fix potential OOB access in supervision frame handling
CVE-2026-641509.8 CRITICALnetfilter: nft_inner: release local_lock before re-enabling softirqs
CVE-2026-639229.8 CRITICALipv6: exthdrs: refresh nh after handling HAO option
CVE-2026-639249.8 CRITICALipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo()
CVE-2026-640469.8 CRITICALnet: tls: prevent chain-after-chain in plain text SG
CVE-2026-640479.8 CRITICALnet: tls: fix off-by-one in sg_chain entry count for wrapped sk_msg ring
CVE-2026-639949.8 CRITICALtunnels: load network headers after skb_cow() in iptunnel_pmtud_build_icmp[v6]()
CVE-2026-641429.8 CRITICALksmbd: close durable scavenger races against m_fp_list lookups
CVE-2026-639939.8 CRITICALvxlan: do not reuse cached ip_hdr() value after skb_tunnel_check_pmtu()
CVE-2026-640559.8 CRITICALnet: ethernet: cortina: Carry over frag counter
CVE-2026-533989.8 CRITICALNFSD: Fix SECINFO_NO_NAME decode error cleanup
CVE-2026-641329.8 CRITICALipv6: ioam: refresh hdr pointer before ioam6_event()
CVE-2026-533999.8 CRITICALnfsd: release layout stid on setlease failure
CVE-2026-641259.8 CRITICALnet: bcmgenet: keep RBUF EEE/PM disabled
CVE-2026-640569.8 CRITICALnet: ethernet: cortina: Make RX SKB per-port
CVE-2026-640699.8 CRITICALnetfs: Fix cancellation of a DIO and single read subrequests
CVE-2026-638579.8 CRITICALnet: airoha: Do not read uninitialized fragment address in airoha_dev_xmit()
CVE-2026-639789.8 CRITICALnet/handshake: Drain pending requests at net namespace exit

Showing top 20 of 431 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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