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CVE-2022-48635— fsdax: Fix infinite loop in dax_iomap_rw()

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dax_iomap_rw函数中存在无限循环问题。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.23% · P13

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 9

VendorProduct Version RangeStatus
Linux Linux 8df4919cb921b28809d05feae3e98dc5d8b48146< 463f36137c40342fb03bba380c1bf703c40d89a6 affected
ca289e0b95afa973d204c77a4ad5c37e06145fbf< 929ef155e1da41c06f4d8ca86ae12b851a83a744 affected
ca289e0b95afa973d204c77a4ad5c37e06145fbf< 60644dffac87b1bb47bdb393aa29d5f2ffcf41a0 affected
ca289e0b95afa973d204c77a4ad5c37e06145fbf< 17d9c15c9b9e7fb285f7ac5367dfb5f00ff575e3 affected
5.15 affected
< 5.15 unaffected
5.15.71≤ 5.15.* unaffected
5.19.12≤ 5.19.* unaffected
… +1 more rows
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I. Basic Information for CVE-2022-48635

Vulnerability Information
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Vulnerability Title
fsdax: Fix infinite loop in dax_iomap_rw()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: fsdax: Fix infinite loop in dax_iomap_rw() I got an infinite loop and a WARNING report when executing a tail command in virtiofs. WARNING: CPU: 10 PID: 964 at fs/iomap/iter.c:34 iomap_iter+0x3a2/0x3d0 Modules linked in: CPU: 10 PID: 964 Comm: tail Not tainted 5.19.0-rc7 Call Trace: <TASK> dax_iomap_rw+0xea/0x620 ? __this_cpu_preempt_check+0x13/0x20 fuse_dax_read_iter+0x47/0x80 fuse_file_read_iter+0xae/0xd0 new_sync_read+0xfe/0x180 ? 0xffffffff81000000 vfs_read+0x14d/0x1a0 ksys_read+0x6d/0xf0 __x64_sys_read+0x1a/0x20 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd The tail command will call read() with a count of 0. In this case, iomap_iter() will report this WARNING, and always return 1 which casuing the infinite loop in dax_iomap_rw(). Fixing by checking count whether is 0 in dax_iomap_rw().
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dax_iomap_rw函数中存在无限循环问题。
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 8df4919cb921b28809d05feae3e98dc5d8b48146 ~ 463f36137c40342fb03bba380c1bf703c40d89a6 -
Linux Linux 5.15 -

II. Public POCs for CVE-2022-48635

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III. Intelligence Information for CVE-2022-48635

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Patches & Fixes for CVE-2022-48635 (1)

Other References for CVE-2022-48635 (3)

Same Patch Batch · Linux · 2024-04-28 · 40 CVEs total

CVE-2022-48666 9.8 CRITICAL scsi: core: Fix a use-after-free
CVE-2022-48652 8.8 HIGH ice: Fix crash by keep old cfg when update TCs more than queues
CVE-2022-48632 7.8 HIGH i2c: mlxbf: prevent stack overflow in mlxbf_i2c_smbus_start_transaction()
CVE-2022-48636 7.8 HIGH s390/dasd: fix Oops in dasd_alias_get_start_dev due to missing pavgroup
CVE-2022-48637 7.8 HIGH bnxt: prevent skb UAF after handing over to PTP worker
CVE-2022-48658 7.5 HIGH mm: slub: fix flush_cpu_slab()/__free_slab() invocations in task context.
CVE-2022-48665 7.1 HIGH exfat: fix overflow for large capacity partition
CVE-2022-48654 7.1 HIGH netfilter: nfnetlink_osf: fix possible bogus match in nf_osf_find()
CVE-2022-48645 net: enetc: deny offload of tc-based TSN features on VF interfaces
CVE-2022-48649 mm/slab_common: fix possible double free of kmem_cache
CVE-2022-48644 net/sched: taprio: avoid disabling offload when it was never enabled
CVE-2022-48643 netfilter: nf_tables: fix nft_counters_enabled underflow at nf_tables_addchain()
CVE-2022-48642 netfilter: nf_tables: fix percpu memory leak at nf_tables_addchain()
CVE-2022-48641 netfilter: ebtables: fix memory leak when blob is malformed
CVE-2022-48640 bonding: fix NULL deref in bond_rr_gen_slave_id
CVE-2022-48639 net: sched: fix possible refcount leak in tc_new_tfilter()
CVE-2022-48638 cgroup: cgroup_get_from_id() must check the looked-up kn is a directory
CVE-2022-48634 drm/gma500: Fix BUG: sleeping function called from invalid context errors
CVE-2022-48633 drm/gma500: Fix WARN_ON(lock->magic != lock) error
CVE-2022-48631 ext4: fix bug in extents parsing when eh_entries == 0 and eh_depth > 0

Showing top 20 of 40 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-48635

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