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CVE-2025-68787— netrom: Fix memory leak in nr_sendmsg()

EPSS 0.05% · P16
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I. Basic Information for CVE-2025-68787

Vulnerability Information
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Vulnerability Title
netrom: Fix memory leak in nr_sendmsg()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: netrom: Fix memory leak in nr_sendmsg() syzbot reported a memory leak [1]. When function sock_alloc_send_skb() return NULL in nr_output(), the original skb is not freed, which was allocated in nr_sendmsg(). Fix this by freeing it before return. [1] BUG: memory leak unreferenced object 0xffff888129f35500 (size 240): comm "syz.0.17", pid 6119, jiffies 4294944652 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 10 52 28 81 88 ff ff ..........R(.... backtrace (crc 1456a3e4): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4983 [inline] slab_alloc_node mm/slub.c:5288 [inline] kmem_cache_alloc_node_noprof+0x36f/0x5e0 mm/slub.c:5340 __alloc_skb+0x203/0x240 net/core/skbuff.c:660 alloc_skb include/linux/skbuff.h:1383 [inline] alloc_skb_with_frags+0x69/0x3f0 net/core/skbuff.c:6671 sock_alloc_send_pskb+0x379/0x3e0 net/core/sock.c:2965 sock_alloc_send_skb include/net/sock.h:1859 [inline] nr_sendmsg+0x287/0x450 net/netrom/af_netrom.c:1105 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg net/socket.c:742 [inline] sock_write_iter+0x293/0x2a0 net/socket.c:1195 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x45d/0x710 fs/read_write.c:686 ksys_write+0x143/0x170 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xa4/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
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基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于nr_sendmsg函数中当nr_output返回NULL时未释放原始skb，可能导致内存泄漏。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ~ f77e538ac4e3adb1882d5bccb7bfdc111b5963d3 -
LinuxLinux 2.6.12 -

II. Public POCs for CVE-2025-68787

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III. Intelligence Information for CVE-2025-68787

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Same Patch Batch · Linux · 2026-01-13 · 93 CVEs total

CVE-2025-710897.8 HIGHiommu: disable SVA when CONFIG_X86 is set
CVE-2025-71069f2fs: invalidate dentry cache on failed whiteout creation
CVE-2025-71068svcrdma: bound check rq_pages index in inline path
CVE-2025-71065f2fs: fix to avoid potential deadlock
CVE-2025-68821fuse: fix readahead reclaim deadlock
CVE-2025-68820ext4: xattr: fix null pointer deref in ext4_raw_inode()
CVE-2025-68819media: dvb-usb: dtv5100: fix out-of-bounds in dtv5100_i2c_msg()
CVE-2025-68818scsi: Revert "scsi: qla2xxx: Perform lockless command completion in abort path"
CVE-2025-68817ksmbd: fix use-after-free in ksmbd_tree_connect_put under concurrency
CVE-2025-68823ublk: fix deadlock when reading partition table
CVE-2025-71067ntfs: set dummy blocksize to read boot_block when mounting
CVE-2025-71071iommu/mediatek: fix use-after-free on probe deferral
CVE-2025-71070ublk: clean up user copy references on ublk server exit
CVE-2025-71072shmem: fix recovery on rename failures
CVE-2025-71073Input: lkkbd - disable pending work before freeing device
CVE-2025-71074functionfs: fix the open/removal races
CVE-2025-71075scsi: aic94xx: fix use-after-free in device removal path
CVE-2025-71077tpm: Cap the number of PCR banks
CVE-2025-71076drm/xe/oa: Limit num_syncs to prevent oversized allocations
CVE-2025-71078powerpc/64s/slb: Fix SLB multihit issue during SLB preload

Showing top 20 of 93 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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