CVE-2018-7757
Description
Memory leak in the sas_smp_get_phy_events function in drivers/scsi/libsas/sas_expander.c in the Linux kernel through 4.15.7 allows local users to cause a denial of service (memory consumption) via many read accesses to files in the /sys/class/sas_phy directory, as demonstrated by the /sys/class/sas_phy/phy-1:0:12/invalid_dword_count file.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Mitigation details
CVE-2018-7757 NameCVE-2018-7757 DescriptionMemory leak in the sas_smp_get_phy_events function in drivers/scsi/libsas/sas_expander.c in the Linux kernel through 4.15.7 allows local users to cause a denial of service (memory consumption) via many read accesses to files in the /sys/class/sas_phy directory, as demonstrated by the /sys/class/sas_phy/phy-1:0:12/invalid_dword_count file. SourceCVE (at…
CVE-2018-7757
| Name | CVE-2018-7757 |
| Description | Memory leak in the sas_smp_get_phy_events function in drivers/scsi/libsas/sas_expander.c in the Linux kernel through 4.15.7 allows local users to cause a denial of service (memory consumption) via many read accesses to files in the /sys/class/sas_phy directory, as demonstrated by the /sys/class/sas_phy/phy-1:0:12/invalid_dword_count file. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-1369-1, DSA-4187-1, DSA-4188-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| linux (PTS) | bullseye | 5.10.223-1 | fixed |
| bullseye (security) | 5.10.257-1 | fixed | |
| bookworm | 6.1.170-3 | fixed | |
| bookworm (security) | 6.1.172-1 | fixed | |
| trixie | 6.12.86-1 | fixed | |
| trixie (security) | 6.12.90-1 | fixed | |
| forky | 7.0.9-1 | fixed | |
| sid | 7.0.10-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| linux | source | wheezy | 3.2.101-1 | DLA-1369-1 | ||
| linux | source | jessie | 3.16.56-1 | DSA-4187-1 | ||
| linux | source | stretch | 4.9.88-1 | DSA-4188-1 | ||
| linux | source | (unstable) | 4.15.17-1 |
Notes
Fixed by: https://git.kernel.org/linus/4a491b1ab11ca0556d2fda1ff1301e862a2d44c4 (4.16-rc1)
Apply commands
Fixed by: https://git.kernel.org/linus/4a491b1ab11ca0556d2fda1ff1301e862a2d44c4 (4.16-rc1)OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 4.15.17-1 |
| debian | bullseye | fixed | 4.15.17-1 |
| debian | forky | fixed | 4.15.17-1 |
| debian | sid | fixed | 4.15.17-1 |
| debian | trixie | fixed | 4.15.17-1 |
References
💬 Discuss CVE-2018-7757 on VIR Community →
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.