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CVE-2026-63901— USB: serial: digi_acceleport: fix memory corruption with small endpoints

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基金会开源的一款操作系统内核。 Linux kernel 2.6.12版本存在安全漏洞，该漏洞源于USB serial digi_acceleport驱动缺少批量输出缓冲区大小检查，可能导致越界内存访问或slab损坏。

AI Predicted 7.8 Difficulty: Hard EPSS 0.23% · P13

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< fd34198c2e5d164b57a7dcd4692626fece319225 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 25b93d0f229a115ab120106f37b9454170d4cfd4 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 6ab1e9ae099577a1019312088309ecbad2da9a91 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 8a65db5edd7b63365e9c5b7d9f4b8f314696dc49 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 41b645e791099f0038225da5e2ca3ca31f00d435 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 062dcc0b324afd03b1406f157190804f105718bb affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 9469419b12a100e7e2ccdda64ab45b8368456c8a affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< cb3560e8eab1dfa1cac1ed52631adf8ec6ff2cd5 affected
… +10 more rows
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I. Basic Information for CVE-2026-63901

Vulnerability Information
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Vulnerability Title
USB: serial: digi_acceleport: fix memory corruption with small endpoints
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: USB: serial: digi_acceleport: fix memory corruption with small endpoints Add the missing bulk-out buffer size sanity checks to avoid out-of-bounds memory accesses or slab corruption should a malicious device report smaller buffers than expected.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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基金会开源的一款操作系统内核。 Linux kernel 2.6.12版本存在安全漏洞，该漏洞源于USB serial digi_acceleport驱动缺少批量输出缓冲区大小检查，可能导致越界内存访问或slab损坏。
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 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ~ fd34198c2e5d164b57a7dcd4692626fece319225 -
Linux Linux 2.6.12 -

II. Public POCs for CVE-2026-63901

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III. Intelligence Information for CVE-2026-63901

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Patches & Fixes for CVE-2026-63901 (5)

Same Patch Batch · Linux · 2026-07-19 · 429 CVEs total

CVE-2026-63795 10.0 CRITICAL 9p: avoid putting oldfid in p9_client_walk() error path
CVE-2026-64056 9.8 CRITICAL net: ethernet: cortina: Make RX SKB per-port
CVE-2026-63886 9.8 CRITICAL scsi: target: iscsi: Validate CHAP_R length before base64 decode
CVE-2026-53399 9.8 CRITICAL nfsd: release layout stid on setlease failure
CVE-2026-53398 9.8 CRITICAL NFSD: Fix SECINFO_NO_NAME decode error cleanup
CVE-2026-63984 9.8 CRITICAL ipv6: rpl: fix hdrlen overflow in ipv6_rpl_srh_decompress()
CVE-2026-63922 9.8 CRITICAL ipv6: exthdrs: refresh nh after handling HAO option
CVE-2026-64035 9.8 CRITICAL igc: set tx buffer type for SMD frames
CVE-2026-64150 9.8 CRITICAL netfilter: nft_inner: release local_lock before re-enabling softirqs
CVE-2026-63924 9.8 CRITICAL ipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo()
CVE-2026-63979 9.8 CRITICAL net/handshake: hand off the pinned file reference to accept_doit
CVE-2026-63800 9.8 CRITICAL pNFS: Fix use-after-free in pnfs_update_layout()
CVE-2026-64037 9.8 CRITICAL wifi: iwlwifi: mld: fix TSO segmentation explosion when AMSDU is disabled
CVE-2026-63978 9.8 CRITICAL net/handshake: Drain pending requests at net namespace exit
CVE-2026-64132 9.8 CRITICAL ipv6: ioam: refresh hdr pointer before ioam6_event()
CVE-2026-63825 9.8 CRITICAL gcov: use atomic counter updates to fix concurrent access crashes
CVE-2026-63857 9.8 CRITICAL net: airoha: Do not read uninitialized fragment address in airoha_dev_xmit()
CVE-2026-64113 9.8 CRITICAL ixgbevf: fix use-after-free in VEPA multicast source pruning
CVE-2026-64016 9.8 CRITICAL ksmbd: fix durable reconnect error path file lifetime
CVE-2026-64162 9.8 CRITICAL idpf: fix read_dev_clk_lock spinlock init in idpf_ptp_init()

Showing top 20 of 429 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-63901

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